diff --git a/draw/models.py b/draw/models.py
index 836f8be..bf35f63 100644
--- a/draw/models.py
+++ b/draw/models.py
@@ -353,6 +353,7 @@ class Pool(models.Model):
         await self.asave()
 
         # Define the passage matrix according to the number of teams
+        table = []
         if self.size == 3:
             table = [
                 [0, 1, 2],
@@ -361,10 +362,10 @@ class Pool(models.Model):
             ]
         elif self.size == 4:
             table = [
-                [0, 1, 2],
-                [1, 2, 3],
-                [2, 3, 0],
-                [3, 0, 1],
+                [0, 1, 2, 3],
+                [1, 2, 3, 0],
+                [2, 3, 0, 1],
+                [3, 0, 1, 2],
             ]
         elif self.size == 5:
             table = [
@@ -377,7 +378,7 @@ class Pool(models.Model):
 
         for i, line in enumerate(table):
             # Create the passage
-            await Passage.objects.acreate(
+            passage = await Passage.objects.acreate(
                 pool=self.associated_pool,
                 position=i + 1,
                 solution_number=tds[line[0]].accepted,
@@ -386,6 +387,10 @@ class Pool(models.Model):
                 reporter=tds[line[2]].participation,
                 defender_penalties=tds[line[0]].penalty_int,
             )
+            if self.size == 4:
+                # Add observer for 4-teams pools
+                passage.observer = tds[line[3]].participation
+                await passage.asave()
 
         return self.associated_pool
 
diff --git a/locale/fr/LC_MESSAGES/django.po b/locale/fr/LC_MESSAGES/django.po
index ae9c03c..4285811 100644
--- a/locale/fr/LC_MESSAGES/django.po
+++ b/locale/fr/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: TFJM\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-04-07 00:04+0200\n"
+"POT-Creation-Date: 2023-04-07 12:02+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Emmy D'Anello <emmy.danello@animath.fr>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -33,7 +33,7 @@ msgstr "équipes"
 msgid "tournament"
 msgstr "tournoi"
 
-#: draw/admin.py:60 draw/models.py:228 draw/models.py:415
+#: draw/admin.py:60 draw/models.py:228 draw/models.py:420
 #: participation/models.py:355
 msgid "round"
 msgstr "tour"
@@ -201,78 +201,78 @@ msgstr "poule associée"
 msgid "The full pool instance."
 msgstr "L'instance complète de la poule."
 
-#: draw/models.py:393
+#: draw/models.py:398
 #, python-brace-format
 msgid "Pool {letter}{number}"
 msgstr "Poule {letter}{number}"
 
-#: draw/models.py:396 draw/models.py:423 participation/admin.py:69
+#: draw/models.py:401 draw/models.py:428 participation/admin.py:69
 #: participation/admin.py:88 participation/models.py:421
 #: participation/models.py:430 participation/tables.py:82
 msgid "pool"
 msgstr "poule"
 
-#: draw/models.py:397 participation/models.py:422
+#: draw/models.py:402 participation/models.py:422
 msgid "pools"
 msgstr "poules"
 
-#: draw/models.py:409 participation/models.py:342 participation/models.py:562
-#: participation/models.py:592 participation/models.py:630
+#: draw/models.py:414 participation/models.py:342 participation/models.py:580
+#: participation/models.py:610 participation/models.py:648
 msgid "participation"
 msgstr "participation"
 
-#: draw/models.py:430
+#: draw/models.py:435
 msgid "passage index"
 msgstr "numéro de passage"
 
-#: draw/models.py:431
+#: draw/models.py:436
 msgid ""
 "The passage order in the pool, between 0 and the size of the pool minus 1."
 msgstr ""
 "L'ordre de passage dans la poule, de 0 à la taille de la poule moins 1."
 
-#: draw/models.py:439
+#: draw/models.py:444
 msgid "choose index"
 msgstr "numéro de choix"
 
-#: draw/models.py:440
+#: draw/models.py:445
 msgid ""
 "The choice order in the pool, between 0 and the size of the pool minus 1."
 msgstr ""
 "L'ordre de choix dans la poule, entre 0 et la taille de la poule moins 1."
 
-#: draw/models.py:446 draw/models.py:469 participation/models.py:444
-#: participation/models.py:599
+#: draw/models.py:451 draw/models.py:474 participation/models.py:444
+#: participation/models.py:617
 #, python-brace-format
 msgid "Problem #{problem}"
 msgstr "Problème n°{problem}"
 
-#: draw/models.py:450 draw/models.py:473
+#: draw/models.py:455 draw/models.py:478
 msgid "accepted problem"
 msgstr "problème accepté"
 
-#: draw/models.py:457
+#: draw/models.py:462
 msgid "passage dice"
 msgstr "dé d'ordre de passage"
 
-#: draw/models.py:464
+#: draw/models.py:469
 msgid "choice dice"
 msgstr "dé d'ordre de choix"
 
-#: draw/models.py:478
+#: draw/models.py:483
 msgid "rejected problems"
 msgstr "problèmes rejetés"
 
-#: draw/models.py:504
+#: draw/models.py:509
 #, python-brace-format
 msgid "Draw of the team {trigram} for the pool {letter}{number}"
 msgstr "Tirage de l'équipe {trigram} pour la poule {letter}{number}"
 
-#: draw/models.py:510
+#: draw/models.py:515
 msgid "team draw"
 msgstr "tirage d'équipe"
 
-#: draw/models.py:511
+#: draw/models.py:516
 msgid "team draws"
 msgstr "tirages d'équipe"
 
@@ -439,16 +439,16 @@ msgid "defender"
 msgstr "défenseur⋅se"
 
 #: participation/admin.py:61 participation/models.py:458
-#: participation/models.py:642
+#: participation/models.py:660
 msgid "opponent"
 msgstr "opposant⋅e"
 
 #: participation/admin.py:65 participation/models.py:465
-#: participation/models.py:643
+#: participation/models.py:661
 msgid "reporter"
 msgstr "rapporteur⋅e"
 
-#: participation/admin.py:120 participation/models.py:597
+#: participation/admin.py:120 participation/models.py:615
 msgid "problem"
 msgstr "numéro de problème"
 
@@ -706,11 +706,15 @@ msgstr "position"
 msgid "defended solution"
 msgstr "solution défendue"
 
-#: participation/models.py:470
+#: participation/models.py:475
+msgid "observer"
+msgstr "observateur⋅rice"
+
+#: participation/models.py:480
 msgid "penalties"
 msgstr "pénalités"
 
-#: participation/models.py:472
+#: participation/models.py:482
 msgid ""
 "Number of penalties for the defender. The defender will loose a 0.5 "
 "coefficient per penalty."
@@ -718,120 +722,124 @@ msgstr ""
 "Nombre de pénalités pour læ défenseur⋅se. Læ défenseur⋅se perd un "
 "coefficient 0.5 sur sa présentation orale par pénalité."
 
-#: participation/models.py:532 participation/models.py:535
-#: participation/models.py:538
+#: participation/models.py:547 participation/models.py:550
+#: participation/models.py:553 participation/models.py:556
 #, python-brace-format
 msgid "Team {trigram} is not registered in the pool."
 msgstr "L'équipe {trigram} n'est pas inscrite dans la poule."
 
-#: participation/models.py:543
+#: participation/models.py:561
 #, python-brace-format
 msgid "Passage of {defender} for problem {problem}"
 msgstr "Passage de {defender} pour le problème {problem}"
 
-#: participation/models.py:547 participation/models.py:556
-#: participation/models.py:637 participation/models.py:679
+#: participation/models.py:565 participation/models.py:574
+#: participation/models.py:655 participation/models.py:697
 msgid "passage"
 msgstr "passage"
 
-#: participation/models.py:548
+#: participation/models.py:566
 msgid "passages"
 msgstr "passages"
 
-#: participation/models.py:567
+#: participation/models.py:585
 msgid "difference"
 msgstr "différence"
 
-#: participation/models.py:568
+#: participation/models.py:586
 msgid "Score to add/remove on the final score"
 msgstr "Score à ajouter/retrancher au score final"
 
-#: participation/models.py:575
+#: participation/models.py:593
 msgid "tweak"
 msgstr "harmonisation"
 
-#: participation/models.py:576
+#: participation/models.py:594
 msgid "tweaks"
 msgstr "harmonisations"
 
-#: participation/models.py:604
+#: participation/models.py:622
 msgid "solution for the final tournament"
 msgstr "solution pour la finale"
 
-#: participation/models.py:609 participation/models.py:648
+#: participation/models.py:627 participation/models.py:666
 msgid "file"
 msgstr "fichier"
 
-#: participation/models.py:615
+#: participation/models.py:633
 #, python-brace-format
 msgid "Solution of team {team} for problem {problem}"
 msgstr "Solution de l'équipe {team} pour le problème {problem}"
 
-#: participation/models.py:617
+#: participation/models.py:635
 msgid "for final"
 msgstr "pour la finale"
 
-#: participation/models.py:620
+#: participation/models.py:638
 msgid "solution"
 msgstr "solution"
 
-#: participation/models.py:621
+#: participation/models.py:639
 msgid "solutions"
 msgstr "solutions"
 
-#: participation/models.py:654
+#: participation/models.py:672
 #, python-brace-format
 msgid "Synthesis of {team} as {type} for problem {problem} of {defender}"
 msgstr ""
 "Note de synthèse de l'équipe {team} en tant que {type} pour le problème "
 "{problem} de {defender}"
 
-#: participation/models.py:662
+#: participation/models.py:680
 msgid "synthesis"
 msgstr "note de synthèse"
 
-#: participation/models.py:663
+#: participation/models.py:681
 msgid "syntheses"
 msgstr "notes de synthèse"
 
-#: participation/models.py:672
+#: participation/models.py:690
 msgid "jury"
 msgstr "jury"
 
-#: participation/models.py:684
+#: participation/models.py:702
 msgid "defender writing note"
 msgstr "note d'écrit de læ défenseur⋅se"
 
-#: participation/models.py:690
+#: participation/models.py:708
 msgid "defender oral note"
 msgstr "note d'oral de læ défenseur⋅se"
 
-#: participation/models.py:696
+#: participation/models.py:714
 msgid "opponent writing note"
 msgstr "note d'écrit de l'opposant⋅e"
 
-#: participation/models.py:702
+#: participation/models.py:720
 msgid "opponent oral note"
 msgstr "note d'oral de l'opposant⋅e"
 
-#: participation/models.py:708
+#: participation/models.py:726
 msgid "reporter writing note"
 msgstr "note d'écrit de læ rapporteur⋅e"
 
-#: participation/models.py:714
+#: participation/models.py:732
 msgid "reporter oral note"
 msgstr "note d'oral de læ rapporteur⋅e"
 
-#: participation/models.py:732
+#: participation/models.py:738
+msgid "observer note"
+msgstr "note de l'observateur⋅rice"
+
+#: participation/models.py:757
 #, python-brace-format
 msgid "Notes of {jury} for {passage}"
 msgstr "Notes de {jury} pour le {passage}"
 
-#: participation/models.py:739
+#: participation/models.py:764
 msgid "note"
 msgstr "note"
 
-#: participation/models.py:740
+#: participation/models.py:765
 msgid "notes"
 msgstr "notes"
 
@@ -911,9 +919,9 @@ msgid "Join"
 msgstr "Rejoindre"
 
 #: participation/templates/participation/note_form.html:11
-#: participation/templates/participation/passage_detail.html:49
-#: participation/templates/participation/passage_detail.html:105
-#: participation/templates/participation/passage_detail.html:111
+#: participation/templates/participation/passage_detail.html:54
+#: participation/templates/participation/passage_detail.html:120
+#: participation/templates/participation/passage_detail.html:126
 #: participation/templates/participation/pool_add_jurys.html:35
 #: participation/templates/participation/pool_detail.html:88
 #: participation/templates/participation/pool_detail.html:106
@@ -980,7 +988,7 @@ msgid "Upload solution"
 msgstr "Envoyer une solution"
 
 #: participation/templates/participation/participation_detail.html:59
-#: participation/templates/participation/passage_detail.html:117
+#: participation/templates/participation/passage_detail.html:132
 #: participation/templates/participation/pool_detail.html:116
 #: participation/templates/participation/team_detail.html:185
 #: participation/templates/participation/upload_motivation_letter.html:13
@@ -1019,73 +1027,85 @@ msgstr "Opposant⋅e :"
 msgid "Reporter:"
 msgstr "Rapporteur⋅e :"
 
-#: participation/templates/participation/passage_detail.html:28
+#: participation/templates/participation/passage_detail.html:29
+msgid "Observer:"
+msgstr "Observateur⋅rice :"
+
+#: participation/templates/participation/passage_detail.html:33
 msgid "Defended solution:"
 msgstr "Solution défendue"
 
-#: participation/templates/participation/passage_detail.html:31
+#: participation/templates/participation/passage_detail.html:36
 msgid "Defender penalties count:"
 msgstr "Nombre de pénalités :"
 
-#: participation/templates/participation/passage_detail.html:34
+#: participation/templates/participation/passage_detail.html:39
 msgid "Syntheses:"
 msgstr "Notes de synthèse :"
 
-#: participation/templates/participation/passage_detail.html:39
+#: participation/templates/participation/passage_detail.html:44
 msgid "No synthesis was uploaded yet."
 msgstr "Aucune note de synthèse n'a encore été envoyée."
 
-#: participation/templates/participation/passage_detail.html:47
-#: participation/templates/participation/passage_detail.html:110
+#: participation/templates/participation/passage_detail.html:52
+#: participation/templates/participation/passage_detail.html:125
 msgid "Update notes"
 msgstr "Modifier les notes"
 
-#: participation/templates/participation/passage_detail.html:53
-#: participation/templates/participation/passage_detail.html:116
+#: participation/templates/participation/passage_detail.html:58
+#: participation/templates/participation/passage_detail.html:131
 msgid "Upload synthesis"
 msgstr "Envoyer une note de synthèse"
 
-#: participation/templates/participation/passage_detail.html:61
+#: participation/templates/participation/passage_detail.html:66
 msgid "Notes detail"
 msgstr "Détails des notes"
 
-#: participation/templates/participation/passage_detail.html:68
+#: participation/templates/participation/passage_detail.html:73
 msgid "Average points for the defender writing:"
 msgstr "Moyenne de l'écrit de læ défenseur⋅se :"
 
-#: participation/templates/participation/passage_detail.html:71
+#: participation/templates/participation/passage_detail.html:76
 msgid "Average points for the defender oral:"
 msgstr "Moyenne de l'oral de læ défenseur⋅se :"
 
-#: participation/templates/participation/passage_detail.html:74
+#: participation/templates/participation/passage_detail.html:79
 msgid "Average points for the opponent writing:"
 msgstr "Moyenne de l'écrit de l'opposant⋅e :"
 
-#: participation/templates/participation/passage_detail.html:77
+#: participation/templates/participation/passage_detail.html:82
 msgid "Average points for the opponent oral:"
 msgstr "Moyenne de l'oral de l'opposant⋅e :"
 
-#: participation/templates/participation/passage_detail.html:80
+#: participation/templates/participation/passage_detail.html:85
 msgid "Average points for the reporter writing:"
 msgstr "Moyenne de l'écrit de læ rapporteur⋅e :"
 
-#: participation/templates/participation/passage_detail.html:83
+#: participation/templates/participation/passage_detail.html:88
 msgid "Average points for the reporter oral:"
 msgstr "Moyenne de l'oral de læ rapporteur⋅e :"
 
-#: participation/templates/participation/passage_detail.html:90
+#: participation/templates/participation/passage_detail.html:92
+msgid "Average points for the observer oral:"
+msgstr "Moyenne de l'oral de l'observateur⋅rice :"
+
+#: participation/templates/participation/passage_detail.html:100
 msgid "Defender points:"
 msgstr "Points de læ défenseur⋅se :"
 
-#: participation/templates/participation/passage_detail.html:93
+#: participation/templates/participation/passage_detail.html:103
 msgid "Opponent points:"
 msgstr "Points de l'opposant⋅e :"
 
-#: participation/templates/participation/passage_detail.html:96
+#: participation/templates/participation/passage_detail.html:106
 msgid "Reporter points:"
 msgstr "Points de læ rapporteur⋅e :"
 
-#: participation/templates/participation/passage_detail.html:104
+#: participation/templates/participation/passage_detail.html:110
+msgid "Observer points:"
+msgstr "Points de l'observateur⋅rice :"
+
+#: participation/templates/participation/passage_detail.html:119
 #: participation/templates/participation/passage_form.html:11
 msgid "Update passage"
 msgstr "Modifier le passage"
@@ -1546,33 +1566,33 @@ msgstr "L'équipe n'est pas encore validée."
 msgid "Participation of team {trigram}"
 msgstr "Participation de l'équipe {trigram}"
 
-#: participation/views.py:641
+#: participation/views.py:643
 msgid "You can't upload a solution after the deadline."
 msgstr "Vous ne pouvez pas envoyer de solution après la date limite."
 
-#: participation/views.py:732
+#: participation/views.py:734
 #, python-brace-format
 msgid "Jurys of {pool}"
 msgstr "Juré⋅es de la {pool}"
 
-#: participation/views.py:759
+#: participation/views.py:761
 msgid "New TFJM² jury account"
 msgstr "Nouveau compte de juré⋅e pour le TFJM²"
 
-#: participation/views.py:772
+#: participation/views.py:774
 #, python-brace-format
 msgid "The jury {name} has been successfully added!"
 msgstr "Læ juré⋅e {name} a été ajouté⋅e avec succès !"
 
-#: participation/views.py:808
+#: participation/views.py:810
 msgid "The following user is not registered as a jury:"
 msgstr "L'utilisateur⋅rice suivant n'est pas inscrit⋅e en tant que juré⋅e :"
 
-#: participation/views.py:816
+#: participation/views.py:818
 msgid "Notes were successfully uploaded."
 msgstr "Les notes ont bien été envoyées."
 
-#: participation/views.py:974
+#: participation/views.py:979
 msgid "You can't upload a synthesis after the deadline."
 msgstr "Vous ne pouvez pas envoyer de note de synthèse après la date limite."
 
diff --git a/participation/forms.py b/participation/forms.py
index d1f30c3..7f5e290 100644
--- a/participation/forms.py
+++ b/participation/forms.py
@@ -323,7 +323,7 @@ class PassageForm(forms.ModelForm):
 
     class Meta:
         model = Passage
-        fields = ('position', 'solution_number', 'defender', 'opponent', 'reporter', 'defender_penalties',)
+        fields = ('position', 'solution_number', 'defender', 'opponent', 'reporter', 'observer', 'defender_penalties',)
 
 
 class SynthesisForm(forms.ModelForm):
@@ -350,4 +350,4 @@ class NoteForm(forms.ModelForm):
     class Meta:
         model = Note
         fields = ('defender_writing', 'defender_oral', 'opponent_writing',
-                  'opponent_oral', 'reporter_writing', 'reporter_oral', )
+                  'opponent_oral', 'reporter_writing', 'reporter_oral', 'observer_oral', )
diff --git a/participation/migrations/0007_note_observer_oral_passage_observer.py b/participation/migrations/0007_note_observer_oral_passage_observer.py
new file mode 100644
index 0000000..88be734
--- /dev/null
+++ b/participation/migrations/0007_note_observer_oral_passage_observer.py
@@ -0,0 +1,45 @@
+# Generated by Django 4.2 on 2023-04-07 10:07
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("participation", "0006_alter_passage_options_passage_position_and_more"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="note",
+            name="observer_oral",
+            field=models.SmallIntegerField(
+                choices=[
+                    (-4, -4),
+                    (-3, -3),
+                    (-2, -2),
+                    (-1, -1),
+                    (0, 0),
+                    (1, 1),
+                    (2, 2),
+                    (3, 3),
+                    (4, 4),
+                ],
+                default=0,
+                verbose_name="observer note",
+            ),
+        ),
+        migrations.AddField(
+            model_name="passage",
+            name="observer",
+            field=models.ForeignKey(
+                blank=True,
+                default=None,
+                null=True,
+                on_delete=django.db.models.deletion.PROTECT,
+                related_name="+",
+                to="participation.participation",
+                verbose_name="observer",
+            ),
+        ),
+    ]
diff --git a/participation/models.py b/participation/models.py
index 00cd7f7..41113ef 100644
--- a/participation/models.py
+++ b/participation/models.py
@@ -466,6 +466,16 @@ class Passage(models.Model):
         related_name="+",
     )
 
+    observer = models.ForeignKey(
+        Participation,
+        on_delete=models.PROTECT,
+        null=True,
+        blank=True,
+        default=None,
+        verbose_name=_("observer"),
+        related_name="+",
+    )
+
     defender_penalties = models.PositiveSmallIntegerField(
         verbose_name=_("penalties"),
         default=0,
@@ -520,9 +530,14 @@ class Passage(models.Model):
     def average_reporter(self) -> float:
         return self.average_reporter_writing + self.average_reporter_oral
 
+    @property
+    def average_observer(self) -> float:
+        return self.avg(note.observer_oral for note in self.notes.all())
+
     def average(self, participation):
         return self.average_defender if participation == self.defender else self.average_opponent \
-            if participation == self.opponent else self.average_reporter if participation == self.reporter else 0
+            if participation == self.opponent else self.average_reporter if participation == self.reporter \
+            else self.average_observer if participation == self.observer else 0
 
     def get_absolute_url(self):
         return reverse_lazy("participation:passage_detail", args=(self.pk,))
@@ -537,6 +552,9 @@ class Passage(models.Model):
         if self.reporter not in self.pool.participations.all():
             raise ValidationError(_("Team {trigram} is not registered in the pool.")
                                   .format(trigram=self.reporter.team.trigram))
+        if self.observer and self.observer not in self.pool.participations.all():
+            raise ValidationError(_("Team {trigram} is not registered in the pool.")
+                                  .format(trigram=self.observer.team.trigram))
         return super().clean()
 
     def __str__(self):
@@ -716,14 +734,21 @@ class Note(models.Model):
         default=0,
     )
 
+    observer_oral = models.SmallIntegerField(
+        verbose_name=_("observer note"),
+        choices=zip(range(-4, 5), range(-4, 5)),
+        default=0,
+    )
+
     def set_all(self, defender_writing: int, defender_oral: int, opponent_writing: int, opponent_oral: int,
-                reporter_writing: int, reporter_oral: int):
+                reporter_writing: int, reporter_oral: int, observer_oral: int = 0):
         self.defender_writing = defender_writing
         self.defender_oral = defender_oral
         self.opponent_writing = opponent_writing
         self.opponent_oral = opponent_oral
         self.reporter_writing = reporter_writing
         self.reporter_oral = reporter_oral
+        self.observer_oral = observer_oral
 
     def get_absolute_url(self):
         return reverse_lazy("participation:passage_detail", args=(self.passage.pk,))
@@ -733,7 +758,7 @@ class Note(models.Model):
 
     def __bool__(self):
         return any((self.defender_writing, self.defender_oral, self.opponent_writing, self.opponent_oral,
-                   self.reporter_writing, self.reporter_oral))
+                   self.reporter_writing, self.reporter_oral, self.observer_oral))
 
     class Meta:
         verbose_name = _("note")
diff --git a/participation/tables.py b/participation/tables.py
index 29d82e4..ad8a27d 100644
--- a/participation/tables.py
+++ b/participation/tables.py
@@ -141,4 +141,4 @@ class NoteTable(tables.Table):
         }
         model = Note
         fields = ('jury', 'defender_writing', 'defender_oral', 'opponent_writing', 'opponent_oral',
-                  'reporter_writing', 'reporter_oral',)
+                  'reporter_writing', 'reporter_oral', 'observer_oral',)
diff --git a/participation/templates/participation/passage_detail.html b/participation/templates/participation/passage_detail.html
index ae3af24..fe8b77f 100644
--- a/participation/templates/participation/passage_detail.html
+++ b/participation/templates/participation/passage_detail.html
@@ -25,6 +25,11 @@
                 <dt class="col-sm-3">{% trans "Reporter:" %}</dt>
                 <dd class="col-sm-9"><a href="{{ passage.reporter.get_absolute_url }}">{{ passage.reporter.team }}</a></dd>
 
+                {% if passage.observer %}
+                    <dt class="col-sm-3">{% trans "Observer:" %}</dt>
+                    <dd class="col-sm-9"><a href="{{ passage.observer.get_absolute_url }}">{{ passage.observer.team }}</a></dd>
+                {% endif %}
+
                 <dt class="col-sm-3">{% trans "Defended solution:" %}</dt>
                 <dd class="col-sm-9"><a href="{{ passage.defended_solution.file.url }}">{{ passage.defended_solution }}</a></dd>
 
@@ -82,6 +87,11 @@
 
                     <dt class="col-sm-8">{% trans "Average points for the reporter oral:" %}</dt>
                     <dd class="col-sm-4">{{ passage.average_reporter_oral|floatformat }}/10</dd>
+
+                    {% if passage.observer %}
+                        <dt class="col-sm-8">{% trans "Average points for the observer oral:" %}</dt>
+                        <dd class="col-sm-4">{{ passage.average_observer|floatformat }}/4</dd>
+                    {% endif %}
                 </dl>
 
                 <hr>
@@ -95,6 +105,11 @@
 
                     <dt class="col-sm-8">{% trans "Reporter points:" %}</dt>
                     <dd class="col-sm-4">{{ passage.average_reporter|floatformat }}/19</dd>
+
+                    {% if passage.observer %}
+                        <dt class="col-sm-8">{% trans "Observer points:" %}</dt>
+                        <dd class="col-sm-4">{{ passage.average_observer|floatformat }}/4</dd>
+                    {% endif %}
                 </dl>
             </div>
         </div>
diff --git a/participation/templates/participation/tex/finale.tex b/participation/templates/participation/tex/finale.tex
index cb058fe..a881c62 100644
--- a/participation/templates/participation/tex/finale.tex
+++ b/participation/templates/participation/tex/finale.tex
@@ -62,7 +62,7 @@ Tour {{ pool.round }} \;-- Poule {{ pool.get_letter_display }}{{ page }} \;-- {%
 & \phantom{asd asd} \phantom{asd asd} \centering \normalsize$0\leq x\leq 10$
 {% endfor %} & \hline
 {% if passages.count == 4 %}
-\multirow{4}{35mm}{\Large Intervention exceptionnelle}& \multicolumn{2}{c|}{\Large {{ passages.last.defender.team.trigram }}}{% for passage in passages.all %}{% if forloop.counter < 4 %} & \multicolumn{2}{c|}{\Large {{ passage.defender.team.trigram }}}{% endif %}{% endfor %} \\ \cline{2-{{ passages.count|add:passages.count|add:1 }}}
+\multirow{4}{35mm}{\Large Intervention exceptionnelle}{% for passage in passages.all %} & \multicolumn{2}{c|}{\Large {{ passage.observer.team.trigram }}}{% endfor %} \\ \cline{2-{{ passages.count|add:passages.count|add:1 }}}
 & \multicolumn{2}{c|}{\phantom{asd asd} \phantom{asd asd}}
 & \multicolumn{2}{c|}{\phantom{asd asd} \phantom{asd asd}}
 & \multicolumn{2}{c|}{\phantom{asd asd} \phantom{asd asd}}
diff --git a/participation/views.py b/participation/views.py
index 2cf7099..1fda3b2 100644
--- a/participation/views.py
+++ b/participation/views.py
@@ -920,6 +920,9 @@ class PassageDetailView(LoginRequiredMixin, DetailView):
             context["notes"] = NoteTable([note for note in self.object.notes.all() if note])
         elif self.request.user.registration.is_admin:
             context["notes"] = NoteTable([note for note in self.object.notes.all() if note])
+        if 'notes' in context and not self.object.observer:
+            # Only display the observer column for 4-teams pools
+            context['notes']._sequence.pop()
         return context
 
 
@@ -1003,3 +1006,10 @@ class NoteUpdateView(VolunteerMixin, UpdateView):
             return super().dispatch(request, *args, **kwargs)
 
         return self.handle_no_permission()
+
+    def get_form(self, form_class=None):
+        form = super().get_form(form_class)
+        if not self.object.passage.observer:
+            # Set the note of the observer only for 4-teams pools
+            del form.fields['observer_oral']
+        return form