Kansas City Chiefs running back Charcandrick West ran free after a coverage bust on a 80-yard touchdown reception that left nose tackle Sylvester Williams covering the shifty back.
The Broncos' defense, which had held for the entire game despite an inept offense, finally broke in the second half.
Safety T.J. Ward was trying to make a tackle on West when receiver Jeremy Maclin peeled back to block him. Ward had enough. As he fell to the ground, he delivered a punch to Maclin that resulted in his ejection.