- Calvin Watkins, ESPN Staff Writer
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Sensabaugh missed Monday's practice while undergoing a concussion test. He said he will visit with a doctor Tuesday with hopes of being cleared to practice.
In other Cowboys injury news, owner/general manager Jerry Jones said starting center Phil Costa won't play at Seattle on Sunday because of a back injury.
Ryan Cook, acquired in a trade from the Miami Dolphins after the final preseason game, is expected to start in Costa's place. Cook was forced into action in the season opener after Costa was hurt during the Cowboys' first drive.
"It's disappointing," Costa said when asked about his back.
Cornerback Mike Jenkins, who missed all offseason work, training camp and preseason games while recovering from right shoulder surgery, practiced as the slot and outside corner Monday. Jenkins hasn't practiced in full pads yet, but he says he feels fine and expects to play Sunday.
Nose tackle Jay Ratliff got in some light work Monday but probably needs another week before returning from a high ankle sprain.
Safety Danny McCray returned to practice on special teams and defense after missing the season opener with a stinger.
"For the most part, it's gone away," McCray said regarding the numbness. "I have to keep improving day by day, but I'm good enough to play."