Chargers' air game likely affected Sunday

Last year, the San Diego Chargers played about a quarter of a game with their three top receiving options -- receivers Vincent Jackson and Malcom Floyd and tight end Antonio Gates -- on the field together.

This summer, San Diego quarterback Philip Rivers talked about his excitement of having the opportunity to play with his top options. Well, he likely won’t get that chance Sunday against visiting Kansas City.

Injuries are starting to hamper the Chargers again.

Floyd is doubtful to play Sunday with a groin injury that kept him out against at New England in Week 2. He didn’t practice all week.

Defensive end Corey Liuget (ankle) and safety Bob Sanders (knee) are also both doubtful after not practicing this week. Sanders missed all but nine games in the past three seasons with several injuries. He did play the first two games this year.

Gates is questionable with a foot injury. He didn’t practice all week.

Jackson (abdomen) is probable. He practiced fully. Running back Mike Tolbert is also probable after practicing fully Friday. He didn’t practice due to a calf injury for the first two days of the week.