Synchronization problem

public PvpGame getGamePlayerIsIn(Player player)
    {
        List<PvpGame> games;


        synchronized(this.games)
        { games = new ArrayList<PvpGame>(this.games); }

        for(PvpGame game : games)
        {
            synchronized(game.playersInLobby)
            {
                if(game.playersInLobby.contains(player))
                    return game;
            }

            synchronized(game.playersInGame)
            {
                if(game.playersInGame.contains(player))
                    return game;
            }


        }
    }