on the wrong end is to set screens on him when he is on defense. I didn't watch it too closely after the first 5 minutes or so, but BYU learned a lot from what San Diego did and made sure our big guys set a pick on Wiltjer when he is on defense. Be physical with him on both ends of the court.
The guy is 6'10" and sometimes doesn't even take the low block on the free throws. He is soft.