"I'm probably the one who's the most excited than anybody in the locker room," running back DeAngelo Williams said of Stewart's return.
Last season, Williams and Stewart combined for 2,351 rushing yards, the most by teammates in the NFL in 24 years.
Smith seemed less than thrilled, saying he cracked a rib while returning a punt against the Washington Redskins in 2006.
"I have to do what I'm asked to do sometimes whether I like it or not," Smith said. "It's not really my call to say if I prefer it or not. I'm here to play football, and this is what I grew up to play.
"I'll try to do the best job I possibly can wherever I'm lined up."
Copyright 2009 by The Associated Press