The football hit him in the shoulder..... he is pulling a ginobli (flopping) and probably trying to get some money out of it.
Whoa! I think you might be right. It definitely looks like it hit him in the shoulder, but he immediately grabs his eye without any hesitation. He's either a really good actor or it deflected off his shoulder into his eye and you just can't really tell in the video. Need some super slo mo.