St. Louis Rams running Steven Jackson sat out more than half of Sunday's 31-28 victory over the Redskins after picking up a personal foul penalty in the second quarter, but Rams coach Jeff Fisher said later Jackson was out because of an injury, not becasue of the penalty.
With about nine minutes left in the second quarter, Jackson was stopped at the 1-yard line and spiked the ball, drawing the penalty.
Jackson did not play again after that.
"It had nothing to do with the spike," Fisher told reporters afterward. "His groin was real tight and we just didn't want to subject him to it. I didn't think he'd be 100 percent."
Rookie Daryl Richardson replaced Jackson for the rest of the game.