Article Photos: Grading Oklahoma State's loss to Oregon: Cowboys struggle with defensive rebounding, transition defense 14/23

Oklahoma State forward Michael Cobbins covers his face during the second half of a second-round game in the NCAA college basketball tournament against Oregon in San Jose, Calif., Thursday, March 21, 2013. Oregon won 68-55. (AP Photo/Ben Margot) ORG XMIT: SJA128