The Kansas City Chiefs held Peyton Manning and the Indianapolis Colts to field goals for most of the day, but they couldn't muster enough offense to remain the NFL's only undefeated team, losing 19-9 on the road Sunday.
The teams traded field goals until the fourth quarter, when Mike Hart's 11-yard touchdown run with 4:02 left pushed Indianapolis' lead to 10.
Hart rushed for 50 yards on 11 carries after replacing Joseph Addai, who left in the third quarter with a shoulder injury. Addai rushed for 50 yards on 17 carries before leaving.
Manning threw for 244 yards on 26-of-44 passing with no touchdowns and one interception. Reggie Wayne caught six of those passes for 75 yards.
Adam Vinatieri made all four of his field-goal attempts, including a 47-yarder, for Indianapolis (3-2).
Jamaal Charles rushed for 87 yards on 16 carries for the Chiefs (3-1), and Matt Cassel completed 16 of 29 passes for 156 yards with no touchdowns and no interceptions.