Vardell's third touchdown, a 7-yard run, came with 6:37 remaining and followed a Stanford recovery of a fumble by Lamont Warren.
Lamont Warren is a versatile backup at tailback.
Nagle connected with Lamont Warren for the game-winning 62-yard play with 58 seconds left in the Colts' 26-21 victory in Cincinnati Saturday night.
Lamont Warren, who performed well in place of Faulk in the regular-season finale against New England, will start against the Chiefs.
So both Crockett, who has replaced Potts, and Lamont Warren, who came in for Faulk, will probably see a considerable amount of action against the Chiefs.
But the Colts drive was halted when Ray Seals tackled running back Lamont Warren for a loss on third down and one.
The Colt offense got just enough passing from Jim Harbaugh and plenty of fine running from its backs, Lamont Warren and Zack Crockett.
ONE more step, Lamont Warren said, and he surely would have had the first down.
Sehorn was still out there, however, to help Jessie Armstead stop Lamont Warren for a 5-yard loss.
Lamont Warren throws a 34-yard touchdown pass to Charles Johnson on the halfback option play.