Besides being a movie star, Don Cheadle also likes to do other famous-guy stuff, like play basketball with the President. On Jimmy Kimmel Live!, he discussed why playing basketball against Obama is so difficult, and no, it is not because the President is a really good basketball player.
Basically, no one wants to block Obama for fear of injuring the leader of the free world, and it is pretty hard to beat someone when no one is playing defense against him. At this point, Barry-O probably thinks that he is the best basketball player ever, but once he plays his first game after his term ends, he might be in for a surprise. Still, be probably would be much more fun to play against than Trump or Hillary, neither of whom have probably ever touched a basketball in their lives.