Ryan Spangler doesn't need to be reminded what happened one year ago at the Sprint Center.
The Oklahoma senior forward missed an open layup with three seconds remaining last season that could have forced overtime against Iowa State in the Big 12 semifinals.
"I don't watch it," Spangler said this week. "It makes me sick to my stomach."
He called it a shot he makes 99 percent of the time and said it just slipped out of his hand.
The third-seeded Sooners open against No. 6 Iowa State on Thursday.
"I don't think about it in a negative way.