If you just looked at the regular season, Allen and the Bills have dominated Mahomes and the Chiefs, going 4-1. This years matchup in Buffalo on November 17th was a battle but, again, it was Allen and Bills pulling out a 30-21 victory -- on the legs of Allen's electric fourth quarter TD run to seal it and hand the Chiefs their first loss.

The near annual playoff matchups between Patrick Mahomes and Josh Allen are hardly unprecedented. The one-sided nature of the postseason rivalry between the two star quarterbacks is more unusual. Mahomes’ Kansas City Chiefs will host Allen and the Buffalo Bills in the AFC title game on Sunday night for the fourth postseason matchup between the QBs in the past five seasons.