Need help! Can't remember game name.

Ok guys I need some help. I can't remember the name of a game and it's literally making my head hurt. It was an older PC online shooter game. It was set up kind of like call of duty. I don't remember a whole lot about it but one map had like a pool and a locker room and the teams were orange and blue. The graphics weren't really that great. Somebody has got to know what game I'm thinking of. Any help is appreciated. Thanks again.