diff --git a/apps/backend/src/lib/graphql/resolvers/mutations/index.ts b/apps/backend/src/lib/graphql/resolvers/mutations/index.ts
index 7c4e69396..356380b6a 100644
--- a/apps/backend/src/lib/graphql/resolvers/mutations/index.ts
+++ b/apps/backend/src/lib/graphql/resolvers/mutations/index.ts
@@ -1,4 +1,5 @@
 import { teamArrivedResolver } from './team-arrived';
+import { teamNotArrivedResolver } from './team-not-arrived';
 import { disqualifyTeamResolver } from './disqualify-team';
 import { assignPersonalAwardResolver } from './assign-personal-award';
 import {
@@ -53,6 +54,7 @@ import { updatePracticeTableAssignmentResolver } from './practice-tables';
 
 export const mutationResolvers = {
   teamArrived: teamArrivedResolver,
+  teamNotArrived: teamNotArrivedResolver,
   disqualifyTeam: disqualifyTeamResolver,
   assignPersonalAward: assignPersonalAwardResolver,
   startJudgingSession: startJudgingSessionResolver,
diff --git a/apps/backend/src/lib/graphql/resolvers/mutations/team-arrived.ts b/apps/backend/src/lib/graphql/resolvers/mutations/team-arrived.ts
index b479dace4..7a38963e6 100644
--- a/apps/backend/src/lib/graphql/resolvers/mutations/team-arrived.ts
+++ b/apps/backend/src/lib/graphql/resolvers/mutations/team-arrived.ts
@@ -67,7 +67,7 @@ export const teamArrivedResolver: GraphQLFieldResolver<
       .execute();
 
     const pubSub = getRedisPubSub();
-    await pubSub.publish(divisionId, RedisEventTypes.TEAM_ARRIVED, { teamId });
+    await pubSub.publish(divisionId, RedisEventTypes.TEAM_ARRIVED, { teamId, arrived: true });
 
     return { teamId };
   } catch (error) {
diff --git a/apps/backend/src/lib/graphql/resolvers/mutations/team-not-arrived.ts b/apps/backend/src/lib/graphql/resolvers/mutations/team-not-arrived.ts
new file mode 100644
index 000000000..761e750a1
--- /dev/null
+++ b/apps/backend/src/lib/graphql/resolvers/mutations/team-not-arrived.ts
@@ -0,0 +1,89 @@
+import { GraphQLFieldResolver } from 'graphql';
+import { RedisEventTypes } from '@lems/types/api/lems/redis';
+import { MutationError, MutationErrorCode } from '@lems/types/api/lems';
+import type { GraphQLContext } from '../../apollo-server';
+import db from '../../../database';
+import { getRedisPubSub } from '../../../redis/redis-pubsub';
+
+interface TeamNotArrivedArgs {
+  teamId: string;
+  divisionId: string;
+}
+
+interface TeamEvent {
+  teamId: string;
+}
+
+/**
+ * Resolver for Mutation.teamNotArrived
+ * Marks that a team has not arrived at a division (reverses arrival) and publishes an event.
+ */
+export const teamNotArrivedResolver: GraphQLFieldResolver<
+  unknown,
+  GraphQLContext,
+  TeamNotArrivedArgs,
+  Promise<TeamEvent>
+> = async (_root, { teamId, divisionId }, context) => {
+  try {
+    if (!context.user) {
+      throw new MutationError(MutationErrorCode.UNAUTHORIZED, 'Authentication required');
+    }
+
+    if (context.user.role !== 'pit-admin') {
+      throw new MutationError(
+        MutationErrorCode.FORBIDDEN,
+        'User does not have permission to mark teams as not arrived'
+      );
+    }
+
+    if (!context.user.divisions.includes(divisionId)) {
+      throw new MutationError(
+        MutationErrorCode.FORBIDDEN,
+        'User does not have access to this division'
+      );
+    }
+
+    const existing = await db.raw.sql
+      .selectFrom('team_divisions')
+      .select(['pk', 'arrived'])
+      .where('team_id', '=', teamId)
+      .where('division_id', '=', divisionId)
+      .executeTakeFirst();
+
+    if (!existing) {
+      throw new MutationError(
+        MutationErrorCode.NOT_FOUND,
+        `Team #${teamId} is not registered in this division`
+      );
+    }
+
+    if (!existing.arrived) {
+      throw new MutationError(
+        MutationErrorCode.CONFLICT,
+        `Team #${teamId} has not arrived at this division yet`
+      );
+    }
+
+    const update: Record<string, unknown> = { arrived: false, arrived_at: null };
+    await db.raw.sql
+      .updateTable('team_divisions')
+      .set(update)
+      .where('team_id', '=', teamId)
+      .where('division_id', '=', divisionId)
+      .execute();
+
+    const pubSub = getRedisPubSub();
+    await pubSub.publish(divisionId, RedisEventTypes.TEAM_ARRIVED, { teamId, arrived: false });
+
+    return { teamId };
+  } catch (error) {
+    console.error(
+      'Error updating team arrival status for team:',
+      teamId,
+      'in division:',
+      divisionId,
+      error
+    );
+    throw error;
+  }
+};
diff --git a/apps/backend/src/lib/graphql/resolvers/subscriptions/team-arrived.ts b/apps/backend/src/lib/graphql/resolvers/subscriptions/team-arrived.ts
index 9baecf837..f8b3a8f27 100644
--- a/apps/backend/src/lib/graphql/resolvers/subscriptions/team-arrived.ts
+++ b/apps/backend/src/lib/graphql/resolvers/subscriptions/team-arrived.ts
@@ -1,8 +1,9 @@
 import { RedisEventTypes } from '@lems/types/api/lems/redis';
 import { getRedisPubSub } from '../../../redis/redis-pubsub';
 
-interface TeamEvent {
+interface TeamArrivalEvent {
   teamId: string;
+  arrived: boolean;
 }
 
 interface TeamArrivalUpdatedSubscribeArgs {
@@ -22,19 +23,21 @@ const teamArrivalUpdatedSubscribe = (
 };
 
 /**
- * Transforms raw Redis events into minimal TeamEvent objects
+ * Transforms raw Redis events into TeamArrivalEvent objects
  */
 const processTeamArrivalEvent = async (
   event: Record<string, unknown>
-): Promise<TeamEvent | null> => {
-  const teamId = ((event.data as Record<string, unknown>).teamId as string) || '';
+): Promise<TeamArrivalEvent | null> => {
+  const data = event.data as Record<string, unknown>;
+  const teamId = (data.teamId as string) || '';
 
   if (!teamId) {
     return null;
   }
 
-  const result: TeamEvent = {
-    teamId
+  const result: TeamArrivalEvent = {
+    teamId,
+    arrived: data.arrived !== false
   };
 
   return result;
diff --git a/apps/frontend/locale/en.json b/apps/frontend/locale/en.json
index 40a81356c..7b7f323ec 100644
--- a/apps/frontend/locale/en.json
+++ b/apps/frontend/locale/en.json
@@ -112,7 +112,9 @@
         "arrived": "Arrived",
         "all-arrived": "All teams arrived! Great job 🎉",
         "waiting-for": "Waiting for {count, plural, one {# team} other {# teams}}",
-        "teams-pending": "{count, plural, one {# team pending} other {# teams pending}}"
+        "teams-pending": "{count, plural, one {# team pending} other {# teams pending}}",
+        "arrived-teams": "{count, plural, one {# Arrived Team} other {# Arrived Teams}}",
+        "mark-not-arrived": "Mark as not arrived"
       },
       "team-input": {
         "title": "Register Team Arrival",
diff --git a/apps/frontend/locale/he.json b/apps/frontend/locale/he.json
index 348730516..c38e0c42c 100644
--- a/apps/frontend/locale/he.json
+++ b/apps/frontend/locale/he.json
@@ -112,7 +112,9 @@
         "arrived": "הגיעו",
         "all-arrived": "כל הקבוצות הגיעו! עבודה מעולה 🎉",
         "waiting-for": "-מחכים ל {count, plural, one {קבוצה} other {# קבוצות}}",
-        "teams-pending": "{count, plural, one {קבוצה טרם הגיעו} other {# קבוצות טרם הגיעו}}"
+        "teams-pending": "{count, plural, one {קבוצה טרם הגיעו} other {# קבוצות טרם הגיעו}}",
+        "arrived-teams": "{count, plural, one {קבוצה הגיעה} other {# קבוצות הגיעו}}",
+        "mark-not-arrived": "סמן כלא הגיעה"
       },
       "team-input": {
         "title": "רישום הגעת קבוצה",
diff --git a/apps/frontend/locale/pl.json b/apps/frontend/locale/pl.json
index 34a581ed6..941c5c250 100644
--- a/apps/frontend/locale/pl.json
+++ b/apps/frontend/locale/pl.json
@@ -112,7 +112,9 @@
         "arrived": "Przybyli",
         "all-arrived": "Wszystkie drużyny przybyły! Świetna robota 🎉",
         "waiting-for": "Oczekiwanie na {count, plural, one {# drużynę} other {# drużyny}}",
-        "teams-pending": "{count, plural, one {# drużyna w oczekiwaniu} other {# drużyny w oczekiwaniu}}"
+        "teams-pending": "{count, plural, one {# drużyna w oczekiwaniu} other {# drużyny w oczekiwaniu}}",
+        "arrived-teams": "{count, plural, one {# drużyna przybyła} other {# drużyny przybyły}}",
+        "mark-not-arrived": "Oznacz jako nieprzybyłą"
       },
       "team-input": {
         "title": "Zarejestruj przybycie drużyny",
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/judge-advisor/graphql/subscriptions/team-arrival-updated.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/judge-advisor/graphql/subscriptions/team-arrival-updated.ts
index aaa6a5541..58093534f 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/judge-advisor/graphql/subscriptions/team-arrival-updated.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/judge-advisor/graphql/subscriptions/team-arrival-updated.ts
@@ -5,6 +5,7 @@ import type { SubscriptionVars, QueryData, JudgingSession } from '../types';
 
 interface TeamEvent {
   teamId: string;
+  arrived: boolean;
 }
 
 interface TeamArrivalSubscriptionData {
@@ -18,6 +19,7 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrivalUpdated($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
@@ -73,13 +75,13 @@ export function createTeamArrivalSubscription(
   const updateQuery = (prev: QueryData, { data }: { data?: unknown }) => {
     if (!data) return prev;
 
-    const { teamId } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
+    const { teamId, arrived } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
 
     return updateJudgingSessions(prev, sessions =>
       updateInArray(
         sessions,
         session => session.team.id === teamId,
-        session => merge(session, { team: { arrived: true } })
+        session => merge(session, { team: { arrived } })
       )
     );
   };
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/judge/graphql/subscriptions/team-arrival-updated.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/judge/graphql/subscriptions/team-arrival-updated.ts
index 52f59403b..ec5e893c6 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/judge/graphql/subscriptions/team-arrival-updated.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/judge/graphql/subscriptions/team-arrival-updated.ts
@@ -5,6 +5,7 @@ import type { SubscriptionVars, QueryData, JudgingSession } from '../types';
 
 interface TeamEvent {
   teamId: string;
+  arrived: boolean;
 }
 
 interface TeamArrivalSubscriptionData {
@@ -18,6 +19,7 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrivalUpdated($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
@@ -74,13 +76,13 @@ export function createTeamArrivalSubscription(
   const updateQuery = (prev: QueryData, { data }: { data?: unknown }) => {
     if (!data) return prev;
 
-    const { teamId } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
+    const { teamId, arrived } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
 
     return updateJudgingSessions(prev, sessions =>
       updateInArray(
         sessions,
         session => session.team.id === teamId,
-        session => merge(session, { team: { arrived: true } })
+        session => merge(session, { team: { arrived } })
       )
     );
   };
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/lead-judge/graphql/subscriptions/team-arrival-updated.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/lead-judge/graphql/subscriptions/team-arrival-updated.ts
index 52f59403b..ec5e893c6 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/lead-judge/graphql/subscriptions/team-arrival-updated.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/lead-judge/graphql/subscriptions/team-arrival-updated.ts
@@ -5,6 +5,7 @@ import type { SubscriptionVars, QueryData, JudgingSession } from '../types';
 
 interface TeamEvent {
   teamId: string;
+  arrived: boolean;
 }
 
 interface TeamArrivalSubscriptionData {
@@ -18,6 +19,7 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrivalUpdated($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
@@ -74,13 +76,13 @@ export function createTeamArrivalSubscription(
   const updateQuery = (prev: QueryData, { data }: { data?: unknown }) => {
     if (!data) return prev;
 
-    const { teamId } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
+    const { teamId, arrived } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
 
     return updateJudgingSessions(prev, sessions =>
       updateInArray(
         sessions,
         session => session.team.id === teamId,
-        session => merge(session, { team: { arrived: true } })
+        session => merge(session, { team: { arrived } })
       )
     );
   };
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/mc/graphql/subscriptions/team-arrival-updated.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/mc/graphql/subscriptions/team-arrival-updated.ts
index cafafdc59..0b76698a0 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/mc/graphql/subscriptions/team-arrival-updated.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/mc/graphql/subscriptions/team-arrival-updated.ts
@@ -4,13 +4,12 @@ import type { SubscriptionConfig } from '../../../../hooks/use-page-data';
 import type { McData } from '../types';
 
 interface TeamArrivedEvent {
-  matchId: string;
   teamId: string;
   arrived: boolean;
 }
 
 interface TeamArrivedSubscriptionData {
-  teamArrived: TeamArrivedEvent;
+  teamArrivalUpdated: TeamArrivedEvent;
 }
 
 interface SubscriptionVars {
@@ -23,7 +22,6 @@ export const TEAM_ARRIVED_SUBSCRIPTION: TypedDocumentNode<
 > = gql`
   subscription TeamArrived($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
-      matchId
       teamId
       arrived
     }
@@ -36,22 +34,18 @@ export function createTeamArrivedSubscription(divisionId: string) {
     subscriptionVariables: { divisionId },
     updateQuery: (prev: McData, { data }: { data?: unknown }) => {
       if (!prev.division?.field || !data) return prev;
-      const event = (data as TeamArrivedSubscriptionData).teamArrived;
+      const event = (data as TeamArrivedSubscriptionData).teamArrivalUpdated;
       return merge(prev, {
         division: {
           field: {
-            matches: prev.division.field.matches.map(_match =>
-              _match.id === event.matchId
-                ? {
-                    ..._match,
-                    participants: _match.participants.map(p =>
-                      p.team?.id === event.teamId
-                        ? { ...p, team: p.team ? { ...p.team, arrived: event.arrived } : null }
-                        : p
-                    )
-                  }
-                : _match
-            )
+            matches: prev.division.field.matches.map(_match => ({
+              ..._match,
+              participants: _match.participants.map(p =>
+                p.team?.id === event.teamId
+                  ? { ...p, team: { ...p.team, arrived: event.arrived } }
+                  : p
+              )
+            }))
           }
         }
       });
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/components/arrivals-stats.tsx b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/components/arrivals-stats.tsx
index 663dd07ee..07a12bb0a 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/components/arrivals-stats.tsx
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/components/arrivals-stats.tsx
@@ -1,30 +1,53 @@
 'use client';
 
-import { useCallback, useMemo } from 'react';
+import { useCallback, useMemo, useState } from 'react';
 import { useLocale, useTranslations } from 'next-intl';
-import { Box, Paper, Stack, Typography, LinearProgress, Chip, useTheme } from '@mui/material';
+import {
+  Box,
+  Paper,
+  Stack,
+  Typography,
+  LinearProgress,
+  Chip,
+  useTheme,
+  IconButton,
+  Collapse,
+  List,
+  ListItem,
+  ListItemText,
+  ListItemAvatar,
+  Avatar,
+  Tooltip
+} from '@mui/material';
 import CheckCircleIcon from '@mui/icons-material/CheckCircle';
 import GroupIcon from '@mui/icons-material/Group';
 import WarningIcon from '@mui/icons-material/Warning';
+import ExpandMoreIcon from '@mui/icons-material/ExpandMore';
+import ExpandLessIcon from '@mui/icons-material/ExpandLess';
+import CancelIcon from '@mui/icons-material/Cancel';
 import { Locale, Locales } from '@lems/localization';
-import { ResponsiveComponent } from '@lems/shared';
+import { ResponsiveComponent, Flag } from '@lems/shared';
 import type { Team } from '../graphql';
 
 interface ArrivalsStatsProps {
   teams: Team[];
+  onTeamNotArrival: (team: Team) => Promise<void>;
   loading?: boolean;
 }
 
-export function ArrivalsStats({ teams, loading = false }: ArrivalsStatsProps) {
+export function ArrivalsStats({ teams, onTeamNotArrival, loading = false }: ArrivalsStatsProps) {
   const theme = useTheme();
   const currentLocale = useLocale() as Locale;
   const direction = Locales[currentLocale].direction;
 
   const t = useTranslations('pages.pit-admin.stats');
+  const [showArrivedTeams, setShowArrivedTeams] = useState(false);
+  const [removingTeamId, setRemovingTeamId] = useState<string | null>(null);
 
   const stats = useMemo(() => {
     const total = teams.length;
-    const arrived = teams.filter(t => t.arrived).length;
+    const arrivedTeams = teams.filter(t => t.arrived);
+    const arrived = arrivedTeams.length;
     const pending = total - arrived;
     const percentage = total === 0 ? 0 : Math.round((arrived / total) * 100);
     const isHighArrival = percentage >= 70;
@@ -36,7 +59,8 @@ export function ArrivalsStats({ teams, loading = false }: ArrivalsStatsProps) {
       pending,
       percentage,
       isHighArrival,
-      missingTeams
+      missingTeams,
+      arrivedTeams
     };
   }, [teams]);
 
@@ -46,6 +70,15 @@ export function ArrivalsStats({ teams, loading = false }: ArrivalsStatsProps) {
     return 'error';
   }, []);
 
+  const handleRemoveTeam = useCallback(
+    async (team: Team) => {
+      setRemovingTeamId(team.id);
+      await onTeamNotArrival(team);
+      setRemovingTeamId(null);
+    },
+    [onTeamNotArrival]
+  );
+
   if (loading) {
     return (
       <Paper sx={{ p: 3 }}>
@@ -222,6 +255,103 @@ export function ArrivalsStats({ teams, loading = false }: ArrivalsStatsProps) {
             </Stack>
           </Box>
         )}
+
+        {stats.arrivedTeams.length > 0 && (
+          <Box
+            sx={{
+              bgcolor: 'rgba(255, 255, 255, 0.1)',
+              borderRadius: 1,
+              backdropFilter: 'blur(10px)',
+              border: '1px solid rgba(255, 255, 255, 0.2)',
+              overflow: 'hidden'
+            }}
+          >
+            <Stack
+              direction="row"
+              spacing={1}
+              sx={{
+                alignItems: 'center',
+                justifyContent: 'space-between',
+                p: 2,
+                cursor: 'pointer'
+              }}
+              onClick={() => setShowArrivedTeams(!showArrivedTeams)}
+            >
+              <Stack direction="row" spacing={1} sx={{ alignItems: 'center' }}>
+                <CheckCircleIcon sx={{ fontSize: '1.2rem' }} />
+                <Typography variant="subtitle2" sx={{ fontWeight: 600 }}>
+                  {t('arrived-teams', { count: stats.arrivedTeams.length })}
+                </Typography>
+              </Stack>
+              <IconButton size="small" sx={{ color: 'white' }}>
+                {showArrivedTeams ? <ExpandLessIcon /> : <ExpandMoreIcon />}
+              </IconButton>
+            </Stack>
+
+            <Collapse in={showArrivedTeams}>
+              <List
+                sx={{
+                  maxHeight: 300,
+                  overflow: 'auto',
+                  bgcolor: 'rgba(0, 0, 0, 0.2)',
+                  py: 0
+                }}
+              >
+                {stats.arrivedTeams.map(team => (
+                  <ListItem
+                    key={team.id}
+                    sx={{
+                      borderBottom: '1px solid rgba(255, 255, 255, 0.1)',
+                      '&:last-child': {
+                        borderBottom: 'none'
+                      }
+                    }}
+                    secondaryAction={
+                      <Tooltip title={t('mark-not-arrived')}>
+                        <IconButton
+                          edge="end"
+                          onClick={() => handleRemoveTeam(team)}
+                          disabled={removingTeamId === team.id}
+                          sx={{
+                            color: 'white',
+                            '&:hover': {
+                              bgcolor: 'rgba(255, 255, 255, 0.1)',
+                              color: '#f44336'
+                            }
+                          }}
+                        >
+                          <CancelIcon />
+                        </IconButton>
+                      </Tooltip>
+                    }
+                  >
+                    <ListItemAvatar>
+                      <Avatar
+                        src={team.logoUrl ?? '/assets/default-avatar.svg'}
+                        sx={{ width: 40, height: 40 }}
+                      />
+                    </ListItemAvatar>
+                    <ListItemText
+                      primary={
+                        <Stack direction="row" spacing={1} sx={{ alignItems: 'center' }}>
+                          <Flag region={team.region} size={20} />
+                          <Typography variant="body2" sx={{ fontWeight: 500 }}>
+                            #{team.number} - {team.name}
+                          </Typography>
+                        </Stack>
+                      }
+                      secondary={
+                        <Typography variant="caption" sx={{ color: 'rgba(255, 255, 255, 0.7)' }}>
+                          {team.affiliation}, {team.city}
+                        </Typography>
+                      }
+                    />
+                  </ListItem>
+                ))}
+              </List>
+            </Collapse>
+          </Box>
+        )}
       </Stack>
     </Paper>
   );
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/index.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/index.ts
index 4b4ede82d..1a7efa054 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/index.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/index.ts
@@ -1 +1,2 @@
 export * from './team-arrived';
+export * from './team-not-arrived';
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/team-arrived.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/team-arrived.ts
index ff9c3a7b7..1dd108c36 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/team-arrived.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/team-arrived.ts
@@ -1,6 +1,5 @@
 import { gql, TypedDocumentNode, ApolloCache } from '@apollo/client';
-import { merge, updateById } from '@lems/shared/utils';
-import type { TeamEvent, Team } from '../types';
+import type { TeamEvent } from '../types';
 
 interface TeamArrivedMutationData {
   teamArrived: TeamEvent;
@@ -25,15 +24,10 @@ export const TEAM_ARRIVED_MUTATION: TypedDocumentNode<
 export function createTeamArrivedCacheUpdate(teamId: string) {
   return (cache: ApolloCache) => {
     cache.modify({
+      id: cache.identify({ __typename: 'Team', id: teamId }),
       fields: {
-        division(existingDivision = {}) {
-          const division = existingDivision as { teams?: Team[] };
-          if (!division.teams) {
-            return existingDivision;
-          }
-          return merge(existingDivision, {
-            teams: updateById(division.teams, teamId, team => merge(team, { arrived: true }))
-          });
+        arrived() {
+          return true;
         }
       }
     });
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/team-not-arrived.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/team-not-arrived.ts
new file mode 100644
index 000000000..289ec88b5
--- /dev/null
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/mutations/team-not-arrived.ts
@@ -0,0 +1,35 @@
+import { gql, TypedDocumentNode, ApolloCache } from '@apollo/client';
+import type { TeamEvent } from '../types';
+
+interface TeamNotArrivedMutationData {
+  teamNotArrived: TeamEvent;
+}
+
+interface TeamNotArrivedMutationVars {
+  teamId: string;
+  divisionId: string;
+}
+
+export const TEAM_NOT_ARRIVED_MUTATION: TypedDocumentNode<
+  TeamNotArrivedMutationData,
+  TeamNotArrivedMutationVars
+> = gql`
+  mutation TeamNotArrived($teamId: String!, $divisionId: String!) {
+    teamNotArrived(teamId: $teamId, divisionId: $divisionId) {
+      teamId
+    }
+  }
+`;
+
+export function createTeamNotArrivedCacheUpdate(teamId: string) {
+  return (cache: ApolloCache) => {
+    cache.modify({
+      id: cache.identify({ __typename: 'Team', id: teamId }),
+      fields: {
+        arrived() {
+          return false;
+        }
+      }
+    });
+  };
+}
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/query.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/query.ts
index 2fa3381ca..343cbbd0f 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/query.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/query.ts
@@ -21,6 +21,7 @@ export const GET_DIVISION_TEAMS: TypedDocumentNode<QueryData, QueryVars> = gql`
         city
         arrived
         region
+        logoUrl
       }
     }
   }
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/subscriptions/team-arrival-updated.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/subscriptions/team-arrival-updated.ts
index 302db09b8..cec19b4c5 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/subscriptions/team-arrival-updated.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/subscriptions/team-arrival-updated.ts
@@ -1,11 +1,11 @@
 import { gql, TypedDocumentNode } from '@apollo/client';
 import { merge, updateById, Reconciler } from '@lems/shared/utils';
 import type { SubscriptionConfig } from '../../../../hooks/use-page-data';
-import type { TeamEvent } from '../types';
+import type { TeamArrivalEvent } from '../types';
 import type { QueryData } from '../query';
 
 interface SubscriptionData {
-  teamArrivalUpdated: TeamEvent;
+  teamArrivalUpdated: TeamArrivalEvent;
 }
 
 interface SubscriptionVars {
@@ -19,6 +19,7 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrivalUpdated($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
@@ -26,13 +27,13 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
 const teamArrivalReconciler: Reconciler<QueryData, SubscriptionData> = (prev, { data }) => {
   if (!data) return prev;
 
-  const { teamId } = data.teamArrivalUpdated;
+  const { teamId, arrived } = data.teamArrivalUpdated;
 
   if (prev.division) {
     return merge(prev, {
       division: {
         id: prev.division.id,
-        teams: updateById(prev.division.teams, teamId, team => merge(team, { arrived: true }))
+        teams: updateById(prev.division.teams, teamId, team => merge(team, { arrived }))
       }
     });
   }
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/types.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/types.ts
index a7d69b7f0..318e849ce 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/types.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/graphql/types.ts
@@ -6,8 +6,13 @@ export interface Team {
   city: string;
   region: string;
   arrived: boolean;
+  logoUrl: string | null;
 }
 
 export interface TeamEvent {
   teamId: string;
 }
+
+export interface TeamArrivalEvent extends TeamEvent {
+  arrived: boolean;
+}
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/page.tsx b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/page.tsx
index 302b337c1..60e6caccf 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/page.tsx
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/pit-admin/page.tsx
@@ -11,10 +11,12 @@ import { usePageData } from '../../hooks/use-page-data';
 import {
   GET_DIVISION_TEAMS,
   TEAM_ARRIVED_MUTATION,
+  TEAM_NOT_ARRIVED_MUTATION,
   type Team,
   parseDivisionTeams,
   createTeamArrivalSubscription,
-  createTeamArrivedCacheUpdate
+  createTeamArrivedCacheUpdate,
+  createTeamNotArrivedCacheUpdate
 } from './graphql';
 import { TeamArrivalInput } from './components/team-arrival-input';
 import { ArrivalsStats } from './components/arrivals-stats';
@@ -28,6 +30,11 @@ export default function PitAdminPage() {
       toast.error(t('error'));
     }
   });
+  const [teamNotArrivedMutation] = useMutation(TEAM_NOT_ARRIVED_MUTATION, {
+    onError: () => {
+      toast.error(t('error'));
+    }
+  });
 
   const subscriptions = useMemo(
     () => [createTeamArrivalSubscription(currentDivision.id)],
@@ -53,6 +60,16 @@ export default function PitAdminPage() {
     [teamArrivedMutation, currentDivision.id]
   );
 
+  const handleTeamNotArrival = useCallback(
+    async (team: Team) => {
+      await teamNotArrivedMutation({
+        variables: { teamId: team.id, divisionId: currentDivision.id },
+        update: createTeamNotArrivedCacheUpdate(team.id)
+      });
+    },
+    [teamNotArrivedMutation, currentDivision.id]
+  );
+
   return (
     <>
       <PageHeader title={t('page-title')} />
@@ -65,7 +82,7 @@ export default function PitAdminPage() {
           disabled={loading}
         />
 
-        <ArrivalsStats teams={teams} loading={loading} />
+        <ArrivalsStats teams={teams} onTeamNotArrival={handleTeamNotArrival} loading={loading} />
       </Stack>
     </>
   );
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/referee/graphql/subscriptions/team-arrival-updated.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/referee/graphql/subscriptions/team-arrival-updated.ts
index b748da82e..e596b08e6 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/referee/graphql/subscriptions/team-arrival-updated.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/referee/graphql/subscriptions/team-arrival-updated.ts
@@ -4,7 +4,7 @@ import type { SubscriptionConfig } from '../../../../hooks/use-page-data';
 import type { TeamArrivedEvent, RefereeData } from '../types';
 
 interface TeamArrivedSubscriptionData {
-  teamArrived: TeamArrivedEvent;
+  teamArrivalUpdated: TeamArrivedEvent;
 }
 
 interface SubscriptionVars {
@@ -18,6 +18,7 @@ export const TEAM_ARRIVED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrived($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
@@ -28,22 +29,18 @@ export function createTeamArrivedSubscription(divisionId: string) {
     subscriptionVariables: { divisionId },
     updateQuery: (prev: RefereeData, { data }: { data?: unknown }) => {
       if (!prev.division?.field || !data) return prev;
-      const event = (data as TeamArrivedSubscriptionData).teamArrived;
+      const event = (data as TeamArrivedSubscriptionData).teamArrivalUpdated;
       return merge(prev, {
         division: {
           field: {
-            matches: prev.division.field.matches.map(_match =>
-              _match.id === event.matchId
-                ? {
-                    ..._match,
-                    participants: _match.participants.map(p =>
-                      p.team?.id === event.teamId
-                        ? { ...p, team: p.team ? { ...p.team, arrived: event.arrived } : null }
-                        : p
-                    )
-                  }
-                : _match
-            )
+            matches: prev.division.field.matches.map(_match => ({
+              ..._match,
+              participants: _match.participants.map(p =>
+                p.team?.id === event.teamId
+                  ? { ...p, team: { ...p.team, arrived: event.arrived } }
+                  : p
+              )
+            }))
           }
         }
       });
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/referee/graphql/types.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/referee/graphql/types.ts
index 94d5c0dcd..02d81053b 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/referee/graphql/types.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/referee/graphql/types.ts
@@ -76,7 +76,6 @@ export interface MatchEvent {
 
 export interface TeamArrivedEvent {
   teamId: string;
-  matchId: string;
   arrived: boolean;
 }
 
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/field-schedule/graphql/subscriptions/team-arrival.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/field-schedule/graphql/subscriptions/team-arrival.ts
index e5e2b2a3c..849650c90 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/field-schedule/graphql/subscriptions/team-arrival.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/field-schedule/graphql/subscriptions/team-arrival.ts
@@ -18,6 +18,7 @@ export const TEAM_ARRIVED_SUBSCRIPTION: TypedDocumentNode<SubscriptionData, Subs
   subscription TeamArrived($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/judging-schedule/graphql/subscriptions/team-arrival-updated.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/judging-schedule/graphql/subscriptions/team-arrival-updated.ts
index 5aa567379..562540c67 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/judging-schedule/graphql/subscriptions/team-arrival-updated.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/judging-schedule/graphql/subscriptions/team-arrival-updated.ts
@@ -5,6 +5,7 @@ import type { QueryVars, QueryData, JudgingSession } from '../types';
 
 interface TeamEvent {
   teamId: string;
+  arrived: boolean;
 }
 
 interface TeamArrivalSubscriptionData {
@@ -18,6 +19,7 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrivalUpdated($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
@@ -47,13 +49,13 @@ export function createTeamArrivalSubscription(
   const updateQuery = (prev: QueryData, { data }: { data?: unknown }) => {
     if (!data) return prev;
 
-    const { teamId } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
+    const { teamId, arrived } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
 
     return updateJudgingSessions(prev, sessions =>
       updateInArray(
         sessions,
         session => session.team.id === teamId,
-        session => merge(session, { team: { arrived: true } })
+        session => merge(session, { team: { arrived } })
       )
     );
   };
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/judging-status/graphql/subscriptions/team-arrival-updated.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/judging-status/graphql/subscriptions/team-arrival-updated.ts
index d35efed81..06ac1651c 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/judging-status/graphql/subscriptions/team-arrival-updated.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/judging-status/graphql/subscriptions/team-arrival-updated.ts
@@ -5,6 +5,7 @@ import type { SubscriptionVars, QueryData, JudgingSession } from '../types';
 
 interface TeamEvent {
   teamId: string;
+  arrived: boolean;
 }
 
 interface TeamArrivalSubscriptionData {
@@ -18,6 +19,7 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrivalUpdated($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
@@ -51,7 +53,7 @@ export function createTeamArrivalSubscription(
     updateQuery: (prev: QueryData, { data }: { data?: unknown }) => {
       if (!data) return prev;
 
-      const { teamId } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
+      const { teamId, arrived } = (data as TeamArrivalSubscriptionData).teamArrivalUpdated;
 
       return updateJudgingSessions(prev, sessions =>
         updateInArray(
@@ -59,7 +61,7 @@ export function createTeamArrivalSubscription(
           session => session.team?.id === teamId,
           session =>
             merge(session, {
-              team: session.team ? merge(session.team, { arrived: true }) : null
+              team: session.team ? merge(session.team, { arrived }) : null
             })
         )
       );
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/team-list/graphql/subscriptions/team-arrival.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/team-list/graphql/subscriptions/team-arrival.ts
index 643e84dc4..168b0e423 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/team-list/graphql/subscriptions/team-arrival.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/team-list/graphql/subscriptions/team-arrival.ts
@@ -10,6 +10,7 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrivalUpdated($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
@@ -17,13 +18,13 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
 const teamRegistrationReconciler: Reconciler<QueryData, SubscriptionData> = (prev, { data }) => {
   if (!data) return prev;
 
-  const { teamId } = data.teamArrivalUpdated;
+  const { teamId, arrived } = data.teamArrivalUpdated;
 
   if (prev.division) {
     return merge(prev, {
       division: {
         id: prev.division.id,
-        teams: updateById(prev.division.teams, teamId, team => merge(team, { arrived: true }))
+        teams: updateById(prev.division.teams, teamId, team => merge(team, { arrived }))
       }
     });
   }
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/team-list/graphql/types.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/team-list/graphql/types.ts
index 71dc5c4e5..c88f4ee85 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/team-list/graphql/types.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/reports/team-list/graphql/types.ts
@@ -10,6 +10,7 @@ export interface Team {
 
 export interface TeamEvent {
   teamId: string;
+  arrived: boolean;
 }
 
 export type QueryData = { division?: { id: string; teams: Team[] } | null };
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/scorekeeper/graphql/subscriptions/team-arrival-updated.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/scorekeeper/graphql/subscriptions/team-arrival-updated.ts
index 7844baa99..e1dc78a42 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/scorekeeper/graphql/subscriptions/team-arrival-updated.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/scorekeeper/graphql/subscriptions/team-arrival-updated.ts
@@ -5,6 +5,7 @@ import type { ScorekeeperData } from '../types';
 
 interface TeamEvent {
   teamId: string;
+  arrived: boolean;
 }
 
 interface TeamArrivalSubscriptionData {
@@ -22,6 +23,7 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrivalUpdated($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
@@ -45,7 +47,7 @@ export function createTeamArrivalSubscription(divisionId: string) {
                     ...participant,
                     team: {
                       ...participant.team,
-                      arrived: true
+                      arrived: teamArrivalUpdated.arrived
                     }
                   };
                 }
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/tournament-manager/graphql/subscriptions/team-arrived.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/tournament-manager/graphql/subscriptions/team-arrived.ts
index c35c6b873..674634bc9 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/tournament-manager/graphql/subscriptions/team-arrived.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/(dashboard)/tournament-manager/graphql/subscriptions/team-arrived.ts
@@ -4,8 +4,9 @@ import type { SubscriptionConfig } from '../../../../hooks/use-page-data';
 import type { SubscriptionVars, QueryData } from '../types';
 
 interface SubscriptionData {
-  teamArrived: {
+  teamArrivalUpdated: {
     teamId: string;
+    arrived: boolean;
   };
 }
 
@@ -13,18 +14,19 @@ export const TEAM_ARRIVED_SUBSCRIPTION: TypedDocumentNode<SubscriptionData, Subs
   subscription TeamArrived($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
 
 export function createTeamArrivedSubscription(
   divisionId: string,
-  onTeamArrived?: (event: SubscriptionData['teamArrived']) => void
+  onTeamArrived?: (event: SubscriptionData['teamArrivalUpdated']) => void
 ): SubscriptionConfig<unknown, QueryData, SubscriptionVars> {
   const updateQuery = (prev: QueryData, { data }: { data?: unknown }) => {
     if (!data) return prev;
 
-    const { teamId } = (data as SubscriptionData).teamArrived;
+    const { teamId, arrived } = (data as SubscriptionData).teamArrivalUpdated;
 
     if (!prev.division) {
       return prev;
@@ -34,7 +36,7 @@ export function createTeamArrivedSubscription(
     const updatedTeams = updateInArray(
       prev.division.teams,
       team => team.id === teamId,
-      team => ({ ...team, arrived: true })
+      team => ({ ...team, arrived })
     );
 
     // Update match participants' teams
@@ -50,7 +52,7 @@ export function createTeamArrivedSubscription(
             participant.team?.id === teamId
               ? {
                   ...participant,
-                  team: { ...participant.team, arrived: true }
+                  team: { ...participant.team, arrived }
                 }
               : participant
         )
@@ -65,7 +67,7 @@ export function createTeamArrivedSubscription(
         session.team?.id === teamId
           ? {
               ...session,
-              team: { ...session.team, arrived: true }
+              team: { ...session.team, arrived }
             }
           : session
     );
@@ -102,7 +104,7 @@ export function createTeamArrivedSubscription(
     const originalUpdateQuery = baseConfig.updateQuery;
     baseConfig.updateQuery = (prev: QueryData, subscriptionData: { data?: unknown }) => {
       if (subscriptionData.data) {
-        onTeamArrived((subscriptionData.data as SubscriptionData).teamArrived);
+        onTeamArrived((subscriptionData.data as SubscriptionData).teamArrivalUpdated);
       }
       return originalUpdateQuery(prev, subscriptionData);
     };
diff --git a/apps/frontend/src/app/[locale]/lems/(volunteer)/deliberation/[category]/graphql/subscriptions/team-arrived.ts b/apps/frontend/src/app/[locale]/lems/(volunteer)/deliberation/[category]/graphql/subscriptions/team-arrived.ts
index fff989373..4c5c4c32b 100644
--- a/apps/frontend/src/app/[locale]/lems/(volunteer)/deliberation/[category]/graphql/subscriptions/team-arrived.ts
+++ b/apps/frontend/src/app/[locale]/lems/(volunteer)/deliberation/[category]/graphql/subscriptions/team-arrived.ts
@@ -2,11 +2,14 @@ import { gql, type TypedDocumentNode } from '@apollo/client';
 import { merge, type Reconciler } from '@lems/shared/utils';
 import type { CategoryDeliberationData } from '../types';
 
+interface TeamArrivalEvent {
+  teamId: string;
+  arrived: boolean;
+}
+
 export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   {
-    teamArrivalUpdated: {
-      teamId: string;
-    };
+    teamArrivalUpdated: TeamArrivalEvent;
   },
   {
     divisionId: string;
@@ -15,30 +18,29 @@ export const TEAM_ARRIVAL_UPDATED_SUBSCRIPTION: TypedDocumentNode<
   subscription TeamArrivalUpdated($divisionId: String!) {
     teamArrivalUpdated(divisionId: $divisionId) {
       teamId
+      arrived
     }
   }
 `;
 
 const teamArrivalUpdatedReconciler: Reconciler<
   CategoryDeliberationData,
-  { teamArrivalUpdated: { teamId: string } }
+  { teamArrivalUpdated: TeamArrivalEvent }
 > = (prev, { data }) => {
   if (!data?.teamArrivalUpdated) return prev;
 
-  const { teamId } = data.teamArrivalUpdated;
+  const { teamId, arrived } = data.teamArrivalUpdated;
   const teamIndex = prev.division.teams.findIndex(t => t.id === teamId);
 
   if (teamIndex === -1) return prev;
 
-  const team = prev.division.teams[teamIndex];
-
   return merge(prev, {
     division: {
       teams: [
         ...prev.division.teams.slice(0, teamIndex),
         {
           ...prev.division.teams[teamIndex],
-          arrived: !team.arrived
+          arrived
         },
         ...prev.division.teams.slice(teamIndex + 1)
       ]
diff --git a/libs/types/src/lib/api/lems/graphql/team.graphql b/libs/types/src/lib/api/lems/graphql/team.graphql
index 7ea2cf28d..41a0bf861 100644
--- a/libs/types/src/lib/api/lems/graphql/team.graphql
+++ b/libs/types/src/lib/api/lems/graphql/team.graphql
@@ -56,6 +56,17 @@ type TeamEvent {
   teamId: String!
 }
 
+"""
+Result of a team's arrival status changing
+"""
+type TeamArrivalEvent {
+  "Team identifier"
+  teamId: String!
+
+  "Whether the team is now marked as arrived"
+  arrived: Boolean!
+}
+
 extend type Mutation {
   """
   Update that a team has arrived in a specific division.
@@ -68,6 +79,17 @@ extend type Mutation {
     divisionId: String!
   ): TeamEvent!
 
+  """
+  Mark a team as not arrived in a specific division (reverses teamArrived).
+  """
+  teamNotArrived(
+    "The team ID to update"
+    teamId: String!
+
+    "Relevant division ID"
+    divisionId: String!
+  ): TeamEvent!
+
   """
   Disqualify a team in a specific division. This action is irreversible.
   Only Judge Advisors can perform this action on their assigned divisions.
@@ -83,9 +105,12 @@ extend type Mutation {
 
 extend type Subscription {
   """
-  Subscribe to events when teams arrive at a specific division.
+  Subscribe to events when a team's arrival status changes in a specific division.
   """
-  teamArrivalUpdated("The division ID to listen for updates in" divisionId: String!): TeamEvent!
+  teamArrivalUpdated(
+    "The division ID to listen for updates in"
+    divisionId: String!
+  ): TeamArrivalEvent!
 
   """
   Subscribe to events when teams are disqualified in a specific division.