The Oakland Raiders are down to their third-string center after Andre Gurode left their game against the Chiefs with a knee injury.
Kansas City also lost left tackle Branden Albert to a knee injury Sunday.
Gurode was hurt midway through the second quarter. It wasn't immediately clear which knee he hurt or whether he would return. The Raiders were already without starting center Stefan Wisniewski, who was inactive because of his own knee injury.
The Raiders wound up sliding right guard Mike Brisiel to center, Lucas Nix from left guard to right and inserting rookie Lamar Mady on the left side.
Albert left the game briefly with an elbow injury. Then he was rolled into late in the first half and was helped gingerly off the field. He was questionable to return.