diff --git a/club/models.py b/club/models.py
index dca3e0e..8b02009 100644
--- a/club/models.py
+++ b/club/models.py
@@ -74,6 +74,11 @@ class Season(ClubScopedModel):
 
         return cls.objects.current_club().filter(start_date__lte=date, end_date__gte=date).first()
 
+    @classmethod
+    def covering(cls, club, date: datetime.date):
+        """Return ``club``'s season covering ``date`` (no tenant context needed)."""
+        return cls.objects.filter(club=club, start_date__lte=date, end_date__gte=date).first()
+
 
 class ClubMembership(ClubScopedModel):
     class StatusChoices(models.TextChoices):
diff --git a/club/tests.py b/club/tests.py
index 3f64bcf..6c699e4 100644
--- a/club/tests.py
+++ b/club/tests.py
@@ -455,7 +455,7 @@ class AdminRegistrationSmokeTests(TestCase):
 
         registered = set(django_admin.site._registry)
         # Concrete, non-auto-created models in these apps should all be registered.
-        project_apps = {"authentication", "club", "members", "teams"}
+        project_apps = {"authentication", "club", "members", "teams", "events"}
         for model in apps.get_models():
             if model._meta.app_label not in project_apps or model._meta.auto_created:
                 continue
diff --git a/clubmanager/settings.py b/clubmanager/settings.py
index b345015..a547daa 100644
--- a/clubmanager/settings.py
+++ b/clubmanager/settings.py
@@ -48,6 +48,7 @@ INSTALLED_APPS = [
     "authentication.apps.AuthenticationConfig",
     "members.apps.MembersConfig",
     "teams.apps.TeamsConfig",
+    "events.apps.EventsConfig",
 ]
 
 MIDDLEWARE = [
diff --git a/events/__init__.py b/events/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/events/admin.py b/events/admin.py
new file mode 100644
index 0000000..1d96b00
--- /dev/null
+++ b/events/admin.py
@@ -0,0 +1,48 @@
+from django.contrib import admin
+from django.utils.translation import gettext_lazy as _
+
+from .models import Attendance, Event, Location, Opponent
+
+
+@admin.register(Opponent)
+class OpponentAdmin(admin.ModelAdmin):
+    list_display = ["name", "club"]
+    list_filter = ["club"]
+    search_fields = ["name"]
+
+
+@admin.register(Location)
+class LocationAdmin(admin.ModelAdmin):
+    list_display = ["name", "city", "club"]
+    list_filter = ["club"]
+    search_fields = ["name", "city"]
+
+
+class AttendanceInline(admin.TabularInline):
+    model = Attendance
+    extra = 0
+    raw_id_fields = ["member"]
+
+
+@admin.register(Event)
+class EventAdmin(admin.ModelAdmin):
+    list_display = ["title", "kind", "start", "season", "club"]
+    list_filter = ["kind", "club", "teams"]
+    search_fields = ["title"]
+    date_hierarchy = "start"
+    autocomplete_fields = ["season", "location", "opponent", "teams", "invited_members", "excluded_members"]
+    inlines = [AttendanceInline]
+    fieldsets = [
+        [None, {"fields": ["title", "kind", "season"]}],
+        [_("Audience"), {"fields": ["teams", "invited_members", "excluded_members"]}],
+        [_("When"), {"fields": ["start", "end", "gathering", "deadline"]}],
+        [_("Where"), {"fields": ["location", "opponent"]}],
+    ]
+
+
+@admin.register(Attendance)
+class AttendanceAdmin(admin.ModelAdmin):
+    list_display = ["event", "member", "status"]
+    list_filter = ["status", "event__kind"]
+    search_fields = ["event__title", "member__first_name", "member__last_name"]
+    raw_id_fields = ["event", "member"]
diff --git a/events/apps.py b/events/apps.py
new file mode 100644
index 0000000..01eac98
--- /dev/null
+++ b/events/apps.py
@@ -0,0 +1,8 @@
+from django.apps import AppConfig
+
+
+class EventsConfig(AppConfig):
+    name = "events"
+
+    def ready(self):
+        from . import signals  # noqa: F401
diff --git a/events/migrations/0001_initial.py b/events/migrations/0001_initial.py
new file mode 100644
index 0000000..5cf0a2f
--- /dev/null
+++ b/events/migrations/0001_initial.py
@@ -0,0 +1,87 @@
+# Generated by Django 6.0.6 on 2026-07-12 15:22
+
+import django.db.models.deletion
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('club', '0008_alter_clubmembership_unique_together_and_more'),
+        ('members', '0002_alter_familymembership_unique_together_and_more'),
+        ('teams', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Location',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=255, verbose_name='name')),
+                ('address', models.CharField(max_length=255, verbose_name='address')),
+                ('city', models.CharField(max_length=255, verbose_name='city')),
+                ('zip_code', models.CharField(max_length=255, verbose_name='zip code')),
+                ('country', models.CharField(max_length=255, verbose_name='country')),
+                ('club', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='%(class)ss', to='club.club')),
+            ],
+            options={
+                'verbose_name': 'location',
+                'verbose_name_plural': 'locations',
+                'ordering': ['name'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Opponent',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=255, verbose_name='name')),
+                ('logo', models.ImageField(blank=True, upload_to='opponents', verbose_name='logo')),
+                ('club', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='%(class)ss', to='club.club')),
+            ],
+            options={
+                'verbose_name': 'opponent',
+                'verbose_name_plural': 'opponents',
+                'ordering': ['name'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Event',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('kind', models.CharField(choices=[('training', 'training'), ('match', 'match'), ('tournament', 'tournament'), ('meeting', 'meeting'), ('social', 'social'), ('other', 'other')], default='other', max_length=10, verbose_name='kind')),
+                ('title', models.CharField(max_length=255, verbose_name='title')),
+                ('start', models.DateTimeField(verbose_name='start')),
+                ('end', models.DateTimeField(blank=True, null=True, verbose_name='end')),
+                ('gathering', models.DateTimeField(blank=True, null=True, verbose_name='gathering')),
+                ('deadline', models.DateTimeField(blank=True, null=True, verbose_name='deadline')),
+                ('club', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='%(class)ss', to='club.club')),
+                ('team', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='events', to='teams.team', verbose_name='team')),
+                ('location', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='events', to='events.location', verbose_name='location')),
+                ('opponent', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='events', to='events.opponent', verbose_name='opponent')),
+            ],
+            options={
+                'verbose_name': 'event',
+                'verbose_name_plural': 'events',
+                'ordering': ['-start'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Attendance',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('status', models.CharField(choices=[('present', 'present'), ('absent', 'absent'), ('excused', 'excused'), ('selected', 'selected'), ('not_selected', 'not selected'), ('maybe', 'maybe'), ('no_response', 'no response')], default='no_response', max_length=20, verbose_name='status')),
+                ('note', models.TextField(blank=True, verbose_name='note')),
+                ('member', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='attendances', to='members.member', verbose_name='member')),
+                ('event', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='attendances', to='events.event', verbose_name='event')),
+            ],
+            options={
+                'verbose_name': 'attendance',
+                'verbose_name_plural': 'attendances',
+                'ordering': ['event', 'member__last_name', 'member__first_name'],
+                'constraints': [models.UniqueConstraint(fields=('event', 'member'), name='unique_attendance_per_event_per_member')],
+            },
+        ),
+    ]
diff --git a/events/migrations/0002_add_event_audience.py b/events/migrations/0002_add_event_audience.py
new file mode 100644
index 0000000..af3f9f4
--- /dev/null
+++ b/events/migrations/0002_add_event_audience.py
@@ -0,0 +1,37 @@
+# Generated by Django 6.0.6 on 2026-07-12 15:38
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('club', '0008_alter_clubmembership_unique_together_and_more'),
+        ('events', '0001_initial'),
+        ('members', '0002_alter_familymembership_unique_together_and_more'),
+        ('teams', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='event',
+            name='excluded_members',
+            field=models.ManyToManyField(blank=True, related_name='excluded_from_events', to='members.member', verbose_name='excluded members'),
+        ),
+        migrations.AddField(
+            model_name='event',
+            name='invited_members',
+            field=models.ManyToManyField(blank=True, related_name='invited_to_events', to='members.member', verbose_name='invited members'),
+        ),
+        migrations.AddField(
+            model_name='event',
+            name='season',
+            field=models.ForeignKey(blank=True, help_text='Season whose team rosters define the audience; derived from the start date when left blank.', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='events', to='club.season', verbose_name='season'),
+        ),
+        migrations.AddField(
+            model_name='event',
+            name='teams',
+            field=models.ManyToManyField(blank=True, related_name='scheduled_events', to='teams.team', verbose_name='teams'),
+        ),
+    ]
diff --git a/events/migrations/0003_copy_team_to_teams.py b/events/migrations/0003_copy_team_to_teams.py
new file mode 100644
index 0000000..0513bec
--- /dev/null
+++ b/events/migrations/0003_copy_team_to_teams.py
@@ -0,0 +1,29 @@
+# Generated by Django 6.0.6 on 2026-07-12 15:38
+
+from django.db import migrations
+
+
+def copy_team_to_teams(apps, schema_editor):
+    Event = apps.get_model("events", "Event")
+    for event in Event.objects.exclude(team__isnull=True).iterator():
+        event.teams.add(event.team_id)
+
+
+def copy_teams_to_team(apps, schema_editor):
+    Event = apps.get_model("events", "Event")
+    for event in Event.objects.iterator():
+        first_team = event.teams.first()
+        if first_team is not None:
+            event.team = first_team
+            event.save(update_fields=["team"])
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0002_add_event_audience'),
+    ]
+
+    operations = [
+        migrations.RunPython(copy_team_to_teams, copy_teams_to_team),
+    ]
diff --git a/events/migrations/0004_remove_event_team.py b/events/migrations/0004_remove_event_team.py
new file mode 100644
index 0000000..402fa3a
--- /dev/null
+++ b/events/migrations/0004_remove_event_team.py
@@ -0,0 +1,17 @@
+# Generated by Django 6.0.6 on 2026-07-12 15:38
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0003_copy_team_to_teams'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='event',
+            name='team',
+        ),
+    ]
diff --git a/events/migrations/__init__.py b/events/migrations/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/events/models.py b/events/models.py
new file mode 100644
index 0000000..b0038a2
--- /dev/null
+++ b/events/models.py
@@ -0,0 +1,97 @@
+from django.db import models
+from django.utils.translation import gettext_lazy as _
+
+from club.models import Season
+from clubmanager.base import ClubScopedModel, UUIDModel
+from members.models import Member
+from teams.models import Team
+
+
+class Opponent(ClubScopedModel):
+    name = models.CharField(_("name"), max_length=255)
+    logo = models.ImageField(_("logo"), upload_to="opponents", blank=True)
+
+    class Meta:
+        verbose_name = _("opponent")
+        verbose_name_plural = _("opponents")
+        ordering = ["name"]
+
+    def __str__(self):
+        return self.name
+
+
+class Location(ClubScopedModel):
+    name = models.CharField(_("name"), max_length=255)
+    address = models.CharField(_("address"), max_length=255)
+    city = models.CharField(_("city"), max_length=255)
+    zip_code = models.CharField(_("zip code"), max_length=255)
+    country = models.CharField(_("country"), max_length=255)
+
+    class Meta:
+        verbose_name = _("location")
+        verbose_name_plural = _("locations")
+        ordering = ["name"]
+
+    def __str__(self):
+        return self.name
+
+
+class Event(ClubScopedModel):
+    class EventKind(models.TextChoices):
+        TRAINING = "training", _("training")
+        MATCH = "match", _("match")
+        TOURNAMENT = "tournament", _("tournament")
+        MEETING = "meeting", _("meeting")
+        SOCIAL = "social", _("social")
+        OTHER = "other", _("other")
+
+    teams = models.ManyToManyField(Team, related_name="scheduled_events", blank=True, verbose_name=_("teams"))
+    invited_members = models.ManyToManyField(Member, related_name="invited_to_events", blank=True, verbose_name=_("invited members"))
+    excluded_members = models.ManyToManyField(Member, related_name="excluded_from_events", blank=True, verbose_name=_("excluded members"))
+    season = models.ForeignKey(Season, on_delete=models.SET_NULL, related_name="events", null=True, blank=True, verbose_name=_("season"), help_text=_("Season whose team rosters define the audience; derived from the start date when left blank."))
+
+    kind = models.CharField(_("kind"), max_length=10, choices=EventKind.choices, default=EventKind.OTHER)
+    title = models.CharField(_("title"), max_length=255)
+
+    start = models.DateTimeField(_("start"))
+    end = models.DateTimeField(_("end"), blank=True, null=True)
+    gathering = models.DateTimeField(_("gathering"), blank=True, null=True)
+    deadline = models.DateTimeField(_("deadline"), blank=True, null=True)
+
+    location = models.ForeignKey(Location, on_delete=models.SET_NULL, related_name="events", null=True, blank=True, verbose_name=_("location"))
+    opponent = models.ForeignKey(Opponent, on_delete=models.SET_NULL, related_name="events", null=True, blank=True, verbose_name=_("opponent"))
+
+    class Meta:
+        verbose_name = _("event")
+        verbose_name_plural = _("events")
+        ordering = ["-start"]
+
+    def __str__(self):
+        return self.title
+
+
+class Attendance(UUIDModel):
+    class AttendanceStatus(models.TextChoices):
+        PRESENT = "present", _("present")
+        ABSENT = "absent", _("absent")
+        EXCUSED = "excused", _("excused")
+        SELECTED = "selected", _("selected")
+        NOT_SELECTED = "not_selected", _("not selected")
+        MAYBE = "maybe", _("maybe")
+        NO_RESPONSE = "no_response", _("no response")
+
+    event = models.ForeignKey(Event, on_delete=models.CASCADE, related_name="attendances", verbose_name=_("event"))
+    member = models.ForeignKey(Member, on_delete=models.CASCADE, related_name="attendances", verbose_name=_("member"))
+    status = models.CharField(_("status"), max_length=20, choices=AttendanceStatus.choices, default=AttendanceStatus.NO_RESPONSE)
+    note = models.TextField(_("note"), blank=True)
+
+    class Meta:
+        verbose_name = _("attendance")
+        verbose_name_plural = _("attendances")
+        ordering = ["event", "member__last_name", "member__first_name"]
+        constraints = [
+            models.UniqueConstraint(fields=["event", "member"], name="unique_attendance_per_event_per_member"),
+        ]
+
+    def __str__(self):
+        return f"{self.event} - {self.member}"
diff --git a/events/services/__init__.py b/events/services/__init__.py
new file mode 100644
index 0000000..fa6cb40
--- /dev/null
+++ b/events/services/__init__.py
@@ -0,0 +1,3 @@
+from .attendance import effective_members, sync_event_attendances
+
+__all__ = ["effective_members", "sync_event_attendances"]
diff --git a/events/services/attendance.py b/events/services/attendance.py
new file mode 100644
index 0000000..004b461
--- /dev/null
+++ b/events/services/attendance.py
@@ -0,0 +1,59 @@
+"""Keep an event's attendance rows in sync with its effective audience.
+
+The audience of an event is the union of the current rosters of its ``teams``
+(for the event's season) plus any individually ``invited_members``, minus any
+``excluded_members``. Attendance rows are reconciled against that set, but only
+for events that are still in the future — history is never rewritten.
+"""
+
+from django.utils import timezone
+
+from club.models import Season
+from events.models import Attendance
+from members.models import Member
+from teams.models import TeamMembership
+
+
+def resolve_season(event):
+    """The season whose rosters define the event's audience."""
+    if event.season_id is not None:
+        return event.season
+    return Season.covering(event.club, event.start.date())
+
+
+def effective_members(event):
+    """Return the ``Member`` queryset invited to ``event``."""
+    member_ids: set = set()
+
+    season = resolve_season(event)
+    if season is not None:
+        team_ids = list(event.teams.values_list("id", flat=True))
+        if team_ids:
+            member_ids.update(TeamMembership.objects.filter(team_id__in=team_ids, season=season).values_list("member_id", flat=True))
+
+    member_ids.update(event.invited_members.values_list("id", flat=True))
+    member_ids.difference_update(event.excluded_members.values_list("id", flat=True))
+
+    return Member.objects.filter(id__in=member_ids)
+
+
+def sync_event_attendances(event):
+    """Reconcile ``event``'s attendance rows with its effective audience.
+
+    No-op for events that have already started. New members get a
+    ``NO_RESPONSE`` row; members no longer invited have their row removed
+    outright (hard reconcile).
+    """
+    if event.start < timezone.now():
+        return
+
+    desired_ids = set(effective_members(event).values_list("id", flat=True))
+    existing_ids = set(event.attendances.values_list("member_id", flat=True))
+
+    to_add = desired_ids - existing_ids
+    if to_add:
+        Attendance.objects.bulk_create([Attendance(event=event, member_id=member_id) for member_id in to_add])
+
+    to_remove = existing_ids - desired_ids
+    if to_remove:
+        event.attendances.filter(member_id__in=to_remove).delete()
diff --git a/events/signals.py b/events/signals.py
new file mode 100644
index 0000000..86a3293
--- /dev/null
+++ b/events/signals.py
@@ -0,0 +1,47 @@
+"""Signal wiring that keeps attendance in sync with the event audience.
+
+Registered from ``EventsConfig.ready``. Two triggers:
+
+* editing an event (its ``start``, or its ``teams`` / ``invited_members`` /
+  ``excluded_members``) re-syncs that event;
+* adding or removing a member from a team roster re-syncs that team's future
+  events.
+"""
+
+from django.db.models.signals import m2m_changed, post_delete, post_save
+from django.dispatch import receiver
+from django.utils import timezone
+
+from events.models import Event
+from events.services import sync_event_attendances
+from teams.models import TeamMembership
+
+M2M_SYNC_ACTIONS = {"post_add", "post_remove", "post_clear"}
+
+
+@receiver(post_save, sender=Event)
+def sync_on_event_save(sender, instance, **kwargs):
+    sync_event_attendances(instance)
+
+
+@receiver(m2m_changed, sender=Event.teams.through)
+@receiver(m2m_changed, sender=Event.invited_members.through)
+@receiver(m2m_changed, sender=Event.excluded_members.through)
+def sync_on_audience_change(sender, instance, action, reverse, model, pk_set, **kwargs):
+    if action not in M2M_SYNC_ACTIONS:
+        return
+
+    if isinstance(instance, Event):
+        sync_event_attendances(instance)
+    else:
+        # Reverse relation edited (e.g. member.invited_to_events.add(event)).
+        for event in Event.objects.filter(pk__in=pk_set or []):
+            sync_event_attendances(event)
+
+
+@receiver(post_save, sender=TeamMembership)
+@receiver(post_delete, sender=TeamMembership)
+def sync_on_roster_change(sender, instance, **kwargs):
+    now = timezone.now()
+    for event in Event.objects.filter(teams=instance.team_id, start__gte=now).distinct():
+        sync_event_attendances(event)
diff --git a/events/tests.py b/events/tests.py
new file mode 100644
index 0000000..7f36a1d
--- /dev/null
+++ b/events/tests.py
@@ -0,0 +1,161 @@
+from datetime import timedelta
+
+from django.db import IntegrityError
+from django.test import TestCase
+from django.utils import timezone
+
+from club.models import Club, Season
+from members.models import Member
+from teams.models import Position, Team, TeamMembership
+
+from .models import Attendance, Event, Location, Opponent
+from .services import effective_members
+
+
+class EventsTestBase(TestCase):
+    def setUp(self):
+        self.club = Club.objects.create(name="Ajax United", slug="ajax-united")
+        today = timezone.localdate()
+        self.season = Season.objects.create(
+            club=self.club,
+            start_date=today - timedelta(days=30),
+            end_date=today + timedelta(days=300),
+        )
+        self.team = Team.objects.create(club=self.club, name="First Team", short_name="1st")
+        self.position = Position.objects.create(club=self.club, name="Forward", short_name="FW")
+        self.alice = Member.objects.create(first_name="Alice", last_name="Ash")
+        self.bob = Member.objects.create(first_name="Bob", last_name="Birch")
+        TeamMembership.objects.create(team=self.team, member=self.alice, season=self.season, position=self.position)
+        TeamMembership.objects.create(team=self.team, member=self.bob, season=self.season, position=self.position)
+        self.future = timezone.now() + timedelta(days=7)
+
+    def make_event(self, **kwargs):
+        kwargs.setdefault("club", self.club)
+        kwargs.setdefault("title", "Training")
+        kwargs.setdefault("start", self.future)
+        if "season" not in kwargs:
+            kwargs["season"] = self.season
+        return Event.objects.create(**kwargs)
+
+    def attendee_ids(self, event):
+        return set(event.attendances.values_list("member_id", flat=True))
+
+
+class EventModelTests(EventsTestBase):
+    def test_str_methods(self):
+        opponent = Opponent.objects.create(club=self.club, name="Rivals FC")
+        location = Location.objects.create(club=self.club, name="Arena", address="1 St", city="Town", zip_code="1000", country="BE")
+        event = self.make_event(title="Big Match")
+        attendance = Attendance.objects.create(event=event, member=self.alice)
+
+        self.assertEqual(str(opponent), "Rivals FC")
+        self.assertEqual(str(location), "Arena")
+        self.assertEqual(str(event), "Big Match")
+        self.assertEqual(str(attendance), "Big Match - Alice Ash")
+
+    def test_attendance_is_unique_per_event_and_member(self):
+        event = self.make_event()
+        Attendance.objects.create(event=event, member=self.alice)
+
+        with self.assertRaises(IntegrityError):
+            Attendance.objects.create(event=event, member=self.alice)
+
+
+class EffectiveMembersTests(EventsTestBase):
+    def test_union_of_team_invited_minus_excluded(self):
+        carol = Member.objects.create(first_name="Carol", last_name="Cedar")
+        event = self.make_event()
+        event.teams.set([self.team])
+        event.invited_members.set([carol])
+        event.excluded_members.set([self.bob])
+
+        self.assertEqual(
+            set(effective_members(event).values_list("id", flat=True)),
+            {self.alice.id, carol.id},
+        )
+
+    def test_season_is_derived_from_start_date(self):
+        event = self.make_event(season=None)
+        event.teams.set([self.team])
+
+        self.assertEqual(self.attendee_ids(event), {self.alice.id, self.bob.id})
+
+    def test_no_covering_season_yields_no_team_members(self):
+        event = self.make_event(season=None, start=timezone.now() + timedelta(days=5000))
+        event.teams.set([self.team])
+
+        self.assertEqual(event.attendances.count(), 0)
+
+
+class AttendanceSyncTests(EventsTestBase):
+    def test_setting_teams_creates_attendance_for_roster(self):
+        event = self.make_event()
+        event.teams.set([self.team])
+
+        self.assertEqual(self.attendee_ids(event), {self.alice.id, self.bob.id})
+
+    def test_invited_member_gets_attendance(self):
+        carol = Member.objects.create(first_name="Carol", last_name="Cedar")
+        event = self.make_event()
+        event.invited_members.set([carol])
+
+        self.assertEqual(self.attendee_ids(event), {carol.id})
+
+    def test_reverse_invited_relation_syncs(self):
+        carol = Member.objects.create(first_name="Carol", last_name="Cedar")
+        event = self.make_event()
+        carol.invited_to_events.add(event)
+
+        self.assertIn(carol.id, self.attendee_ids(event))
+
+    def test_excluding_member_removes_attendance(self):
+        event = self.make_event()
+        event.teams.set([self.team])
+        event.excluded_members.set([self.alice])
+
+        self.assertEqual(self.attendee_ids(event), {self.bob.id})
+
+    def test_hard_reconcile_removes_even_responded_rows(self):
+        event = self.make_event()
+        event.teams.set([self.team])
+        attendance = event.attendances.get(member=self.alice)
+        attendance.status = Attendance.AttendanceStatus.PRESENT
+        attendance.save()
+
+        event.excluded_members.set([self.alice])
+
+        self.assertFalse(event.attendances.filter(member=self.alice).exists())
+
+    def test_past_event_is_not_synced(self):
+        event = self.make_event(start=timezone.now() - timedelta(days=1))
+        event.teams.set([self.team])
+
+        self.assertEqual(event.attendances.count(), 0)
+
+
+class RosterChangeSyncTests(EventsTestBase):
+    def test_adding_roster_member_syncs_future_events(self):
+        event = self.make_event()
+        event.teams.set([self.team])
+        dave = Member.objects.create(first_name="Dave", last_name="Dogwood")
+
+        TeamMembership.objects.create(team=self.team, member=dave, season=self.season, position=self.position)
+
+        self.assertIn(dave.id, self.attendee_ids(event))
+
+    def test_removing_roster_member_syncs_future_events(self):
+        event = self.make_event()
+        event.teams.set([self.team])
+
+        TeamMembership.objects.get(team=self.team, member=self.alice).delete()
+
+        self.assertNotIn(self.alice.id, self.attendee_ids(event))
+
+    def test_roster_change_leaves_past_events_untouched(self):
+        past = self.make_event(start=timezone.now() - timedelta(days=1))
+        past.teams.add(self.team)
+        Attendance.objects.create(event=past, member=self.alice)
+
+        TeamMembership.objects.get(team=self.team, member=self.alice).delete()
+
+        self.assertTrue(past.attendances.filter(member=self.alice).exists())
diff --git a/events/views.py b/events/views.py
new file mode 100644
index 0000000..60f00ef
--- /dev/null
+++ b/events/views.py
@@ -0,0 +1 @@
+# Create your views here.
diff --git a/pyproject.toml b/pyproject.toml
index d65565b..535339d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,6 +6,7 @@ dependencies = [
     "dj-database-url>=3.1.2",
     "django>=6.0.6",
     "django-phonenumber-field[phonenumbers]>=8.4.0",
+    "pillow>=12.3.0",
     "python-decouple>=3.8",
 ]
 
diff --git a/uv.lock b/uv.lock
index f174501..684173e 100644
--- a/uv.lock
+++ b/uv.lock
@@ -19,6 +19,7 @@ dependencies = [
     { name = "dj-database-url" },
     { name = "django" },
     { name = "django-phonenumber-field", extra = ["phonenumbers"] },
+    { name = "pillow" },
     { name = "python-decouple" },
 ]
 
@@ -33,6 +34,7 @@ requires-dist = [
     { name = "dj-database-url", specifier = ">=3.1.2" },
     { name = "django", specifier = ">=6.0.6" },
     { name = "django-phonenumber-field", extras = ["phonenumbers"], specifier = ">=8.4.0" },
+    { name = "pillow", specifier = ">=12.3.0" },
     { name = "python-decouple", specifier = ">=3.8" },
 ]
 
@@ -133,6 +135,56 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/e6/29/f7e30e3dbd3c7e3d9c4a55006112c04ee62b4765a31f21bcc28c253ac3f1/phonenumbers-9.0.33-py2.py3-none-any.whl", hash = "sha256:ba1d0da52711d5fdda6b2b673b2621fe80774fc5d1b2e5a6ef783396b0343186", size = 2595422, upload-time = "2026-06-22T10:23:29.925Z" },
 ]
 
+[[package]]
+name = "pillow"
+version = "12.3.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/1c/3d/bb7fca845737cf9d7dbde16ed1843984665ff2e0a518f5db43e77ec540b9/pillow-12.3.0.tar.gz", hash = "sha256:3b8182a766685eaa002637e28b4ec8d6b18819a0c71f579bf0dbaa5830297cce", size = 47025035, upload-time = "2026-07-01T11:56:38.965Z" }
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+    { url = "https://files.pythonhosted.org/packages/1a/d2/0219746d0fd16fc8a84498e79452375be3797d3ce4044596ce565164b84f/pillow-12.3.0-cp314-cp314-ios_13_0_arm64_iphonesimulator.whl", hash = "sha256:8728f216dcdb6e6d555cf971cb34076139ad74b31fc2c14da4fafc741c5f6217", size = 4255435, upload-time = "2026-07-01T11:54:53.414Z" },
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