The playing status of Oklahoma State All-American tackle Russell Okung is questionable heading into the AT&T Cotton Bowl.
The Tulsa World reported Wednesday that unnamed sources have indicated that Okung suffered a knee injury during the Cowboys' closed practice session Tuesday at Cowboys Stadium.
Okung has started 46 straight games for the Cowboys during his illustrious career. He was a finalist for the Outland Trophy and is considered to be the best blocker in the Big 12.
If Okung can't go, he would be replaced by Brady Bond in the starting lineup.
OSU coach Mike Gundy declined comment when asked by the World whether Okung was hurt and would be ready for Saturday's game.
"I really can't even comment on it," Gundy told the paper.
Okung is projected as a likely high first-round pick in the upcoming NFL draft. His presence helped the Cowboys allow only 10 sacks this season to rank sixth nationally and lead the Big 12.
Bond made 39 consecutive starts for the Cowboys at right tackle before he sustained a sprained ankle last month. He was replaced by <a href="http://sports.espn.com/ncf/player/profile?playerId=377909" target="_new">Andrew Mitchell</a>, who started the final four games of the season at right tackle.
If Okung can't play, a patchwork OSU offensive front will be under constant pressure to protect <a href="http://sports.espn.com/ncf/player/profile?playerId=174054" target="_new">Zac Robinson</a> from a Mississippi defense that led the Southeastern Conference with 34 sacks this season.