The Rams may not have running back Steven Jackson on Sunday against the Texans. Jackson was among four players that were at home on Friday with what St. Louis coach Steve Spagnuolo called illness or flu-like symptoms. "Some guys that are a little worse than others, you need to shut 'em down," Spagnuolo said. "There's coaches probably battling a cough and a sneeze, just like we all do. But whatever the doctors and trainers say, we just go that way." Also missing Friday's practice were quarterback Kyle Boller, defensive tackle Darell Scott and wide receiver Brandon Gibson.