you're looking at it with the "oh, she's black and they don't like her because she's black and good!" attitude. Don't take this the wrong way, but that would be a behaviour/opinion I would expect by someone who has an inferiority complex (sorry, it's my opinion based on yours. Don't mean to insult you). For me, its pretty clear this was a joke and it was only intended as that.
Let's hope no black basketball player will ever make fun of a white player in NBA (the same way she's doing here, of course), as he would be called racist - since basketball is, currently, mainly played by black players. And that would be wrong, right?