I saw his right foot touch the center court line before he fell down. That's why I thought it was a violation. The lack of a whistle actually ended up helping TCU though since the clock ran out before the ball was dunked. Had the call been made Arizona has the ball side out with a chance for one last shot. Yeah, one or the other should have been called. Of course, TCU still had a timeout that they should have called once the guy got trapped in the corner. And it didn’t end up mattering, but the clock briefly stopped at 2.2 seconds also. Would have been interesting had he got the dunk (or another shot) off with a couple tenths left. No idea why Jamie Dixon didn't call a timeout there if he had one left. Monumentally stupid.