Redskins wide receiver Pierre Garon will be a game-time decision Sunday in St. Louis, Coach Mike Shanahan said Friday afternoon.Garon, Robert Griffin IIIs top target, left last weeks victory in New Orleans with an injury to his right foot. He did not practice Wednesday and was limited on Thursday and Friday. He'll be listed officially as "questionable" on the NFL's injury report, Shanahan added.He got some work in there today, Shanahan said. Hes feeling better. Well work him out before the game and see if he can go full speed. It was an improvement.For the second straight day, Shanahan said pain tolerance is likely to determine whether Garon suits up against the Rams.If you could go live with the pain, looks like he can go full speed, then you let him go, the coach said. But if its a situation where youre going to make it a lot worse, then obviously the chances of him playing arent very good. But right now its pain tolerance. Well see before the game.Shanahan also mentioned that Garon could take medication to help ease the pain.If Garon is unable to play, hell be replaced in the lineup by Aldrick Robinson.