Pregame notes from San Diego

SAN DIEGO -- San Diego linebacker Shawne Merriman is active and he is expected to start against Kansas City. He didn’t practice all week with a foot injury.

Kansas City linebacker Mike Vrabel is inactive with a knee injury. He will be replaced by Andy Studebaker, who had two interceptions and a half sack in the Chiefs’ upset over Pittsburgh last week.

San Diego defensive lineman Luis Castillo is not active. He suffered a calf injury at Denver. Alfonso Boone will start in his place.

Brandon Siler will start ahead of Kevin Burnett at linebacker.

San Diego center Nick Hardwick is inactive for the 10th straight game with an ankle injury. He practiced in a limited basis last week.

New San Diego right tackle Jon Runyan is inactive. He probably won’t be ready to play until two weeks from now at Dallas.