Roger Staubach vs. Terry Bradshaw. Steve Young vs. Troy Aikman. Tom Brady vs. Peyton Manning.
Those quarterback matchups defined decades in the NFL, and for the eighth time in the past five seasons, Patrick Mahomes and Josh Allen will face off with the entire NFL world watching. The stakes couldn't be higher, either — at least for a regular-season game.
The Chiefs enter the matchup as the league's only remaining unbeaten team at 9-0, having found just about every possible way to win a game this season, while the 8-2 Bills have a giant lead in the AFC East and have ripped off five straight wins, scoring 30-plus points in the past four games.