Harry: Chaser
Ron: Chaser
Draco: Keeper
Neville: Beater
Fred: Seeker
George: Keeper
Marauder's Era & Tom & Newt
Sirius: You just watch because you were never that good on a broom.
James: You weren't allowed to play due to an accident, but you're there in the stands yelling louder than everyone.
Remus: Beater
Peter: Chaser
Tom: Seeker
Newt: You don't like the sport, you think it's brutish.