NFL

According to CBS’ Bill Cowher, Steelers coach Mike Tomlin said after Sunday’s game that Ben Roethlisberger’s head injury was “concussion oriented.” Big Ben was hit in the helmet by Chiefs LB Derrick Johnson’s knee on an overtime scramble. Charlie Batch came on in relief and turned the ball over on downs, leading to the Kansas City Chiefs upset victory. Roethlisberger will have to pass his baseline tests this week to play at Baltimore next Sunday. If his dizziness is any indication of his condition, it appears that he will not play in week 12.

Elsewhere around the NFL:

Detroit: ESPN’s Chris Mortensen reports that Matthew Stafford is “iffy” for Thursday’s game against the Packers. X-rays revealed no fracture to Stafford’s collarbone, which the team initially feared, but he amazingly reentered Sunday’s game against the advice of doctors. Stafford will undergo further test on Monday, including an MRI, but the team has officially called his status for Thursday a “game-day decision.”

Arizona: Arizona Cardinals QB Kurt Warner completed 15-of-19 passes for 203 yards and two touchdowns before suffering a “minor” concussion that knocked him out for the rest of Sunday’s win over St. Louis. Warner, 38, was replaced by Matt Leinart with :47 left in the second quarter and did not return. Even though Warner was on the sideline for the second half and the game remained close, he did not see any further action.

Green Bay: According to Packers beat writer Greg Bedard, the initial prognosis for OLB Aaron Kampman is that he has a torn ACL. Green Bay Packers may not pursue re-signing Kampman in the offseason because he’s not a good fit in their 3-4 defense.

Washington: The Redskins have already ruled out Clinton Portis (concussion) for Week 12, coach Jim Zorn revealed Sunday. Offensive coordinator Sherman Smith added that the team will scour their free agent list and pick up a back to be active behind Rock Cartwright and Quinton Ganther because Ladell Betts (torn MCL) is probably done for the season.

Buffalo: Marshawn Lynch, who left in the second quarter Sunday with a shoulder injury, said after the game that he expects to be fine. Lynch had eight carries for 18 yards, no catches and no touchdowns before departing. He’ll undergo a precautionary MRI Monday, which will go a long way in determining his readiness for Week 12.