Terrance Williams likely to play Saturday

OXNARD, Calif. -- Cowboys rookie wide receiver Terrance Williams missed the first two preseason games with a concussion.

After recovering from the head injury, Williams has returned with a vengeance in training camp practices and will probably make his preseason debut Saturday afternoon at the Arizona Cardinals. Dwayne Harris took over as the No. 3 receiver with Williams out but moved back to No. 4 upon the rookie's return.

"It feels pretty good. Finally, I get a chance to go out there and play against a different color," Williams said. "It's just a matter of just being comfortable and going out there and showing what I can do."

One of the big issues with any rookie receiver is the ability to master the playbook and make adjustments on the field based on the defense. Williams has been chastised a few times by the coaches for mental errors -- like most players have been during training camp -- but he seems to have command of the playbook.

"I'm still looking at it day by day," Williams said. "I just want to keep building to where I know it 100 percent in the stuff that I'm doing. It's stuff I'm trying to put together, instead of listening to the whole thing."