On a scale of 1-10, how depressing is it that I have repeatedly thought about this question?
I have a few that I've always considered depending on the sport...
Fallout Boy; My song knows what you did in the dark (Light em up)
Light'em Up is a common slang term for attacking/scoring. Felt right. This would be my song of choice if it were a scoring game like hockey or baseball.
Sick Puppies; Going Down
"One of us is going down" seems pretty perfect for a fight. This would be my song of choice if it were a one-on-one kind of thing like MMA/Boxing/wrestling.