Dunkmaster Darius is already here. I feel 
would be a great choice. Barrel=basketball and W+E creates a posterize animation. Plus the uniform could be obnoxiously tight lol. Leave your ideas in the comments.
Illaoi. She has a dunk move and a round idol, perfect basketball stuff
Illaoi
Ahri literally bounces her spirit orb around like a basketball. Ahri in a jersey. Hnnng... Riot pls.
Should there be any question about it?
illaoi and grag could work, but i think grag would work better with a dodgeball skin
Syndra should definitely get one. And maybe Olaf?
Garen to rival Darius
og dunk his auto attack could look like bouncing the ball around his opponents legs only thing i cant really invision is the counter strike
Dunkmacia
only ones i can think of due to certain moves
+ Tibbers
Tibbers can be a giant basketball that bounces on enemies instead of slapping them.
malphite would be cool. he could transform into a flaming ball when he ults. his Q is a rolling ball
Orianna and Garen.
