Morris Claiborne injury: Cowboys CB won't play due to concussion

Dallas Cowboys cornerback Morris Claiborne will not play Sunday against the Pittsburgh Steelers, according to NFL.com's Ian Rapoport. Claiborne was listed as questionable this week, due to a concussion:

#Cowboys expected to play without CB Morris Claiborne. Told he hasn't passed his concussion tests. Barring a late change, Jenkins will start

— Ian Rapoport (@RapSheet) December 16, 2012

Claiborne, a rookie cornerback out of LSU that Dallas selected with the sixth pick in the 2012 draft, has 40 tackles and one interception this season. He was removed from Dallas' Week 14 win over Cincinnati after colliding with teammate Danny McCray while making a tackle. Claiborne was later diagnosed with a concussion, and was limited in practice throughout the week. He was still suffering from dizziness on Thursday, and apparently was unable to pass concussion tests administered this weekend.

Rapoport indicated that veteran Mike Jenkins will start in place of Claiborne. Jenkins, a former first-round selection, is in his fifth season with the Cowboys. He has appeared in 10 games for Dallas this year, recording seven tackles. Jenkins has eight career interceptions.