As it should be, the refs didn't whistle a 50/50 play where two players were being aggressive and came to an independent collision.
As a relevant point, the refs will, and should, benefit that type of play on both sides.
That ball easily could have careened and gone to a Duke player, but it didn't. We ended up with it.
If you are relying on that type of call, you should lose the game. Duke had plenty of chances to win that game and didn't convert. It happens.
Addressing the call in the post-game just seems so beneath him. What does he have to prove? He's arguably the greatest college basketball coach ever. He just won a title last year. He's coaching the 2016 USA team and already has Olympic gold.
This really seems like an old man just being grumpy.