Williams skipped practice Wednesday with a sore left knee, but coach John Fox said the Panthers were "resting" the running back. Stewart practiced in full after sitting out Tuesday with a sore Achilles tendon.
Defensive tackle Damione Lewis is questionable with a sore shoulder, but he practiced Wednesday.
The biggest concern for Carolina is defensive end Charles Johnson, who is doubtful after missing his second consecutive practice with a strained pectoral muscle. Johnson plays mostly on passing downs.
Fullback Brad Hoover and safety Charles Godfrey also are doubtful, but they aren't expected to play because of ankle injuries.
Copyright 2009 by The Associated Press