Manning will be the key for Colts

Tick tock.

That's the sound of a clock that may run more quickly than usual on "Monday Night Football" (ESPN, 8:30 p.m. ET) in Jacksonville as two of the NFL's best rushing offenses face off.

The Indianapolis Colts (5-0) have arguably the game's best passer in Peyton Manning. But they are also averaging 142.0 yards rushing per game. That includes a 121-yard, two-touchdown performance by backup Kenton Keith, who filled in for starter Joseph Addai two weeks ago against Tampa Bay. Addai, who is averaging 101.8 yards per game, is expected back for Monday night.