The San Diego Chargers have added an illness to Philip Rivers' injury designation but still list the quarterback as probable for 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 remains probable to play.
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, cannot play.