On Marion Barber's 1-yard run, umpire Bill Schuster got rolled up by KC outside linebacker Tamba Hali. He's on the ground now with 5:56 to play in the opening quarter but it was a pretty hard hit to his right knee that might have been flagged for the Tom Brady rule had Schuster been a quarterback. He just walked off the field and will be examined by the Chiefs medical personnel. Field judge Jim Howey has moved to the Umpire's spot.