Chiefs' Patrick Mahomes says rivalry with Josh Allen has 'long way to go' before reaching Manning-Brady level
Stacking the NFL's 12 greatest long-term quarterback rivalries: Why Patrick Mahomes-Justin Herbert could be next - ESPN
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Manning-Brady 2.0? Why Patrick Mahomes vs. Josh Allen could be AFC's next great QB rivalry - ESPN
Is Josh Allen-Patrick Mahomes next Peyton Manning-Tom Brady rivalry?
Is Patrick Mahomes vs. Josh Allen the new Brady-Manning rivalry?, NFL
Josh Allen vs Patrick Mahomes: Superstars of the NFL and its next great rivalry, NFL News