The Kansas City Chiefs are undefeated no more. The Buffalo Bills handed them their first loss of the season on Sunday, 30-21, snapping a 15-game win

After Mahomes threw another pick to seal the Chiefs' fate, the two superstar quarterbacks met at midfield for a postgame exchange . Mahomes had a five-word message to Allen that seemed to promise the two will see each other in the playoffs: "We'll do it again, baby."

The Mahomes-Allen rivalry is now tied 4-4 (including playoffs) with just two points separating the two clubs in those meetings. Allen has the most wins by any quarterback against Mahomes, who is clearly hoping he gets another shot at the Bills this year.