diff --git a/apps/server/src/domains/game/application/useCases/executeReadyForGameUseCase.ts b/apps/server/src/domains/game/application/useCases/executeReadyForGameUseCase.ts
new file mode 100644
index 0000000..d1cb6ad
--- /dev/null
+++ b/apps/server/src/domains/game/application/useCases/executeReadyForGameUseCase.ts
@@ -0,0 +1,43 @@
+import { protocol } from "@repo/shared";
+import { GameManager } from "@server/domains/game/GameManager";
+
+type EmitToSocket = (event: string, payload?: unknown) => void;
+
+type ExecuteReadyForGameUseCaseParams = {
+  socketId: string;
+  roomId?: string;
+  gameManager: GameManager;
+  emitToSocket: EmitToSocket;
+};
+
+export const executeReadyForGameUseCase = ({
+  socketId,
+  roomId,
+  gameManager,
+  emitToSocket,
+}: ExecuteReadyForGameUseCaseParams) => {
+  const allPlayers = gameManager.getAllPlayers();
+  emitToSocket(protocol.SocketEvents.CURRENT_PLAYERS, allPlayers);
+
+  console.log("[GameHandler] READY_FOR_GAME received", {
+    socketId,
+    totalPlayers: allPlayers.length,
+  });
+
+  if (!roomId) {
+    console.log("[GameHandler] READY_FOR_GAME missing roomId", { socketId });
+    return;
+  }
+
+  const startTime = gameManager.getRoomStartTime(roomId);
+  if (!startTime) {
+    return;
+  }
+
+  emitToSocket(protocol.SocketEvents.GAME_START, { startTime });
+  console.log("[GameHandler] GAME_START sent to ready client", {
+    socketId,
+    roomId,
+    startTime,
+  });
+};
diff --git a/apps/server/src/domains/game/handlers/onReadyForGame.ts b/apps/server/src/domains/game/handlers/onReadyForGame.ts
index f7c845b..c708f1b 100644
--- a/apps/server/src/domains/game/handlers/onReadyForGame.ts
+++ b/apps/server/src/domains/game/handlers/onReadyForGame.ts
@@ -1,30 +1,24 @@
 import { Socket } from "socket.io";
 import { GameManager } from "@server/domains/game/GameManager";
-import { protocol } from "@repo/shared";
+import { executeReadyForGameUseCase } from "@server/domains/game/application/useCases/executeReadyForGameUseCase";
 
 export const onReadyForGame = (
   socket: Socket,
   gameManager: GameManager
 ) => {
-  const allPlayers = gameManager.getAllPlayers();
-  socket.emit(protocol.SocketEvents.CURRENT_PLAYERS, allPlayers);
-  console.log("[GameHandler] READY_FOR_GAME received", {
-    socketId: socket.id,
-    totalPlayers: allPlayers.length,
-  });
-
   const roomId = Array.from(socket.rooms).find((room) => room !== socket.id);
-  if (roomId) {
-    const startTime = gameManager.getRoomStartTime(roomId);
-    if (startTime) {
-      socket.emit(protocol.SocketEvents.GAME_START, { startTime });
-      console.log("[GameHandler] GAME_START sent to ready client", {
-        socketId: socket.id,
-        roomId,
-        startTime,
-      });
-    }
-  } else {
-    console.log("[GameHandler] READY_FOR_GAME missing roomId", { socketId: socket.id });
-  }
+
+  executeReadyForGameUseCase({
+    socketId: socket.id,
+    roomId,
+    gameManager,
+    emitToSocket: (event, payload) => {
+      if (payload === undefined) {
+        socket.emit(event);
+        return;
+      }
+
+      socket.emit(event, payload);
+    },
+  });
 };