![](https://3.bp.blogspot.com/-VOW2TIIwCAs/VoVeFXOeMaI/AAAAAAAAECM/78hCt5MEN7s/s640/charles-walker-oklahoma-dt.jpg)
Walker did not play last week because of a concussion, and Dimon has not played since the first half of the Ohio State game with an Achilles injury.
Stoops also said safety Ahmad Thomas, who took a knee to the helmet against Texas, has gone through practice the past two days, and Stoops is “optimistic” Thomas will be able to play Saturday. (Tulsa World)
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