It's a basketball set. The fact that other sports are included is irrelevant, especially if the PIDs are linked, which I believe they are. It used to be in multi-sport and there were multiple threads of people asking where it was.
VERY slow trading due to health problems. Not transferrable so safe to trade with, just moving is painful and can't always access the cards.
Cardboard History My COMC
New Collection Website: Cardboard History Gallery (Still under construction)
Tips on how to make your scans look like the card does in hand (No more washed out, fuzzy scans!):