With Kolb unlikely to play, undrafted rookie Jeff Tuel will serve as Manuel's backup against the Colts.
Cornerback Leodis McKelvin (groin) and wide receiver Brad Smith (undisclosed) will not play. McKelvin, who had groin surgery in the offseason,Air Max 97 Cheap Online
, has been dealing with soreness since the team's night practice on Monday. Marrone said that McKelvin met with Buffalo's doctors Friday night for further evaluation.