AP
FILE - In this Oct. 17, 2015, file photo, Oklahoma defensive tackle Charles Walker (97) celebrates a tackle during the first half of an NCAA college football game against Kansas State in Manhattan, Kan. Ohio State coach Urban Myer admittedly worries about everything, but near the top of the list this week is how the Buckeyes are going to run the ball Saturday against Oklahomaâs huge and experienced defensive front. (AP Photo/Nati Harnik)
Oklahoma DE Charles Walker won't be available when the Sooners take on Texas in the Cotton Bowl Saturday, coach Bob Stoops told reporters Wednesday.