Peyton Manning led the Colts to six scores on his final eight possessions, rallying Indianapolis from an early 10-point deficit to an impressive 38-20 victory Sunday -- giving the Broncos one more anguishing chapter in this lopsided rivalry. But their win wasn't without cost. Eight-time Pro Bowl receiver Marvin Harrison left in the second quarter with a bruised left knee and did not return. Outside linebacker Rob Morris was carted off the field just before halftime with a sprained left knee. Former Pro Bowl safety Bob Sanders (ankle) and running back Joseph Addai (shoulder and back) couldn't finish the game, either.