Kansas City Chiefs pulled off the upset to defeat Buffalo Bills. Kansas City Chiefs entered the game as the underdog, with a 42% chance to win before the game started.
From the outset, Kansas City Chiefs refused to go away, chipping away at Buffalo Bills's lead until Kansas City Chiefs took their first lead toward the end of the game. Buffalo Bills did not go quietly, recapturing the lead for themselves, until Kansas City Chiefs regained control for good at the end of the game.