diff --git a/src/matches/events/MatchUpdatedLineupsEvent.spec.ts b/src/matches/events/MatchUpdatedLineupsEvent.spec.ts
new file mode 100644
index 00000000..51f800d8
--- /dev/null
+++ b/src/matches/events/MatchUpdatedLineupsEvent.spec.ts
@@ -0,0 +1,137 @@
+jest.mock("./abstracts/MatchEventProcessor", () => {
+  return class MatchEventProcessor<T> {
+    protected data: T;
+    protected matchId: string;
+
+    constructor(
+      protected readonly logger: any,
+      protected readonly hasura: any,
+      protected readonly matchAssistant: any,
+    ) {}
+
+    public setData(matchId: string, data: T) {
+      this.data = data;
+      this.matchId = matchId.trim();
+    }
+  };
+});
+
+import MatchUpdatedLineupsEvent from "./MatchUpdatedLineupsEvent";
+
+describe("MatchUpdatedLineupsEvent", () => {
+  const buildProcessor = (existingSteamIds: string[]) => {
+    const hasura = {
+      mutation: jest.fn().mockResolvedValue({}),
+    };
+    const existingPlayers = existingSteamIds.map((steam_id) => ({ steam_id }));
+    const matchAssistant = {
+      getMatchLineups: jest.fn().mockResolvedValue({
+        options: {
+          type: "Competitive",
+        },
+        lineup_1_id: "lineup-1",
+        lineup_2_id: "lineup-2",
+        lineup_1: {
+          lineup_players: existingPlayers.slice(0, 5),
+        },
+        lineup_2: {
+          lineup_players: existingPlayers.slice(5),
+        },
+        lineup_players: existingPlayers,
+      }),
+    };
+
+    const processor = new MatchUpdatedLineupsEvent(
+      {} as any,
+      hasura as any,
+      matchAssistant as any,
+      {} as any,
+      {} as any,
+    );
+
+    return { processor, hasura, matchAssistant };
+  };
+
+  const lineups = {
+    lineup_1: [
+      { name: "Player 1", captain: true, steam_id: "1" },
+      { name: "Player 2", captain: false, steam_id: "2" },
+      { name: "Player 3", captain: false, steam_id: "3" },
+      { name: "Player 4", captain: false, steam_id: "4" },
+      { name: "Player 5", captain: false, steam_id: "5" },
+    ],
+    lineup_2: [
+      { name: "Player 6", captain: true, steam_id: "6" },
+      { name: "Player 7", captain: false, steam_id: "7" },
+      { name: "Player 8", captain: false, steam_id: "8" },
+      { name: "Player 9", captain: false, steam_id: "9" },
+      { name: "Stand In", captain: false, steam_id: "10" },
+    ],
+  };
+
+  it("processes a full competitive lineup update with a stand-in", async () => {
+    const { processor, hasura } = buildProcessor([
+      "1",
+      "2",
+      "3",
+      "4",
+      "5",
+      "6",
+      "7",
+      "8",
+      "9",
+    ]);
+
+    processor.setData("match-1", { lineups });
+
+    await processor.process();
+
+    expect(hasura.mutation).toHaveBeenCalledWith(
+      expect.objectContaining({
+        delete_match_lineup_players: expect.any(Object),
+      }),
+    );
+    expect(hasura.mutation).toHaveBeenCalledWith({
+      insert_match_lineup_players: {
+        __args: {
+          objects: [
+            {
+              discord_id: "Stand In",
+              captain: false,
+              steam_id: "10",
+              match_lineup_id: "lineup-2",
+            },
+          ],
+        },
+        affected_rows: true,
+      },
+    });
+  });
+
+  it("processes partial lineup updates", async () => {
+    const { processor, hasura } = buildProcessor(["1", "2", "3"]);
+
+    processor.setData("match-1", {
+      lineups: {
+        lineup_1: lineups.lineup_1.slice(0, 2),
+        lineup_2: [],
+      },
+    });
+
+    await processor.process();
+
+    expect(hasura.mutation).toHaveBeenCalledWith(
+      expect.objectContaining({
+        delete_match_lineup_players: expect.any(Object),
+      }),
+    );
+    expect(hasura.mutation).toHaveBeenCalledWith({
+      insert_match_lineup_players: {
+        __args: {
+          objects: [],
+        },
+        affected_rows: true,
+      },
+    });
+  });
+});
diff --git a/src/matches/events/MatchUpdatedLineupsEvent.ts b/src/matches/events/MatchUpdatedLineupsEvent.ts
index 8b84529b..7f7d012f 100644
--- a/src/matches/events/MatchUpdatedLineupsEvent.ts
+++ b/src/matches/events/MatchUpdatedLineupsEvent.ts
@@ -1,4 +1,3 @@
-import { ExpectedPlayers } from "src/discord-bot/enums/ExpectedPlayers";
 import MatchEventProcessor from "./abstracts/MatchEventProcessor";
 
 export default class MatchUpdatedLineupsEvent extends MatchEventProcessor<{
@@ -61,10 +60,6 @@ export default class MatchUpdatedLineupsEvent extends MatchEventProcessor<{
       }
     }
 
-    if (players.length < ExpectedPlayers[match.options.type] * 2) {
-      return;
-    }
-
     // remove anyone not in the match
     await this.hasura.mutation({
       delete_match_lineup_players: {