After the Broncos went three-and-out on their first possession, cornerback Javier Arenas set the Chiefs up with strong field position with a 20-yard punt return.
Starting from the Denver 37-yard line, Kansas City took a shot for the end zone on first down, but safety Mike Adams was there in tight coverage to force an incompletion.
Running back Jamaal Charles rushed for a 6-yard gain on second down and Brady Quinn found tight end Tony Moeaki for a 19-yard gain to the Denver 12. But the Denver defense made another red-zone stand, keeping the Chiefs from picking up another first down.
Kansas City kicker Ryan Succop converted on another field goal, this one from 22 yards, to put the Chiefs up 6-0 with 4:35 left in the first quarter.