I found this on the Urban Dictionary's word of the day list. I think we've all known people like this and, if you aren't one that plays sports this way, you absolutely HATE the people that do.
Lawyer Ball
The art of playing the rules instead of playing a game. For example, trying to work out a walk in slow-pitch softball. Swing the bat, you puss!
Also applicable to weenies who demand free throws after the slightest contact in a pick-up basketball game and d-bags who take yardage penalties in backyard football games.
Pops: Hit it out of the park, boy!
Son: Don't pressure me, I'm trying to work the count.
Pops: Don't play lawyer ball, son.
I want to kill all people that play lawyer ball.