The San Diego Chargers added an illness to Philip Rivers' injury designation, but the quarterback started Sunday's game against the Chiefs.
Rivers originally was listed as probable with a foot injury. The Chargers updated his status Saturday, listing both the foot injury and the illness but saying that he remained probable to play.
Kellen Clemens serves as San Diego's reserve quarterback and took more snaps with the first unit on Wednesday.
The Chargers also signed quarterback Brad Sorensen off their practice squad Saturday amid a series of roster moves.
The San Diego Union-Tribune reported Saturday that the Chargers promoted Sorensen as a precaution in case Rivers, who is dealing with severe flu-like symptoms, could not play. The Union-Tribune reported Rivers is expected to play. Rivers has started in 156 straight games since becoming the Chargers' starting quarterback in 2006.
A team source told ESPN's Adam Schefter it would "take more than this to knock him out of a game."
The Chargers also placed defensive lineman Corey Liuget (foot) and cornerback Brandon Flowers (knee) on season-ending injured reserve Saturday.
Information from ESPN.com's Eric D. Williams was used in this report.
