Seattle Seahawks running back C.J. Prosise will play this Saturday in Atlanta if he can make it through the practice week.

“He’s going to have to go full speed and let it rip,” head coach Pete Carroll said during his Tuesday press conference. “If he’s holding back, he won’t play.”

Prosise returned to the practice field Tuesday after sitting out since Week 11 with a scapula injury. Finally cleared to participate, Prosise will have to prove he’s ready before Carroll will turn him loose on game day.

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“He’s going to work through the week,” Carroll said. “He was out there in the walk-through today and will get to practice and see what he can do. I really don’t have anything to forecast for you at this point. We have to get some more information.”

Carroll updated a number of other injuries on Tuesday, most surprisingly, on the improvement of fullback Marcel Reece. Reece had injured his foot in Saturday’s wild-card win over Detroit, and it was feared the foot was broken.

“He’s practicing today,” Carroll said. “He’s in good shape and he bounced back quickly.”

Running back Thomas Rawls should be ready for Saturday as well. Rawls shouldered a significant number of carries against the Lions and Carroll wanted to make sure he was able to bounce back from the workload.

“He looks great, he’s in exactly the place he should be on a Wednesday prep day,” Carroll said. “He’ll be fine.”

Defensive tackle Tony McDaniel is not as fortunate, and remains questionable to return this week. McDaniel has yet to clear the concussion protocol and will have to do so before resuming practice. Carroll had no timeline as of Tuesday afternoon.

The Seahawks will practice Wednesday and Thursday before traveling to Atlanta.