Colts DE Mark Thomas, knocked unconscious when he was struck on the helmet with a knee during Sunday's game against Dallas, rejoined the team yesterday after being hospitalized overnight.

Doctors determined Thomas had a concussion and ruled him out of this week's game with Kansas City.

Thomas was hit late in the fourth quarter by Cowboys offensive lineman Flozell Adams.

"I think I had some numbness in my foot, but that came back pretty quick," said the 6-foot-5, 265-pound Thomas, in his eighth NFL season. "Other than that, I just didn't really remember a whole lot from that play, probably for about a half hour."

CARDINAL WOES: Cardinals DE Andre Wadsworth probably will undergo arthroscopic knee surgery this week, and assistant coach Joe Greene has admitted he slapped a worker as he walked off the field after Sunday's 27-3 loss to New England.

Coach Vince Tobin expects Wadsworth to be out 3-4 weeks.

Greene, who coaches the Cardinals defensive line, said the incident occurred after a stadium worker setting up for a postgame concert ran over Greene's foot with a cart. Tobin said he talked to Greene about the incident and had no plans to take any action.

AKILI INJURY: Bengals rookie QB Akili Smith will miss a few weeks because he sprained his right toe during a 41-10 loss to Jacksonville on Sunday. An MRI exam yesterday found no major injury, but the foot was badly swollen. Jeff Blake will take over while Smith recovers.