In terms of photorealism, the bright stadium lights from above cause quite a bit of beige light from the court to bounce back onto the players. You can see the light casting on Deng's uniform and arms, Joe Johnson's skin and the basketball.

Or in this case, the beige light from the court and the red paint of the United Center are bouncing back onto Derrick Rose. You don't see it as much in the 2K13 comparison shot:

I think it might add a little more realism if there were more of a beige light casting on the players. If someone told me how or what values to edit, I'd be glad to give it a try myself.