It was a freakish accident, just like Thomas landed on Yao's leg

or Kobe charged into Yao's leg. PB went after the ball, and pressed WB when he's about call a timeout. But that's how it's always played, like Kenny Smith said. Knee to knee bump is accidental, because you could be the one huring more, even if you are the initiator.

It's understandable that OKC fans are angry and blaming PB, but there is no ground to make that as intentional harming another player.