Article Photos: Grading Oklahoma State's loss to Oregon: Cowboys struggle with defensive rebounding, transition defense 16/23

Oregon forward E.J. Singler (25) shoots over Oklahoma State forward Michael Cobbins (20) during the first half of a second-round game in the NCAA college basketball tournament in San Jose, Calif., Thursday, March 21, 2013. (AP Photo/Ben Margot) ORG XMIT: SJA127