Is Patrick Mahomes vs. Josh Allen already one of the great QB battles of NFL history? Josh Allen might need to win on Sunday to help cement its status.

In this generation of football, the rivalry between Patrick Mahomes and Josh Allen has taken on a similar vein, with this Sunday's meeting in the AFC Conference Championship bound to be another classic chapter in this story that grows by the year.

Taking a deep dive look at the NFL's best rivalry So as we head into Sunday night's highly-anticipated AFC Championship Game, today the question is, what kind of rivalry is Patrick Mahomes vs. Josh Allen?

The Patriots' Tom Brady won his first two playoff matchups against Peyton Manning before losing the final three in the only QB rivalry with five postseason meetings. Brady split four matchups with Baltimore's Joe Flacco with the Patriots and Ravens alternating wins in those matchups that came in a span of six seasons.

Chiefs quarterback Patrick Mahomes and the Bills’ Josh Allen will meet in the postseason for the fourth time, which is a rarity in NFL history.

There isn't a contemporary NFL quarterback rivalry quite like Josh Allen versus Patrick Mahomes. While the MVP-level signal-callers don't play in the same division, they've made a habit of meeting in high-stakes contests.