As much as Kansas City Chiefs fans hate to admit it, you can't have NFL G.O.A.T. conversations without discussing Tom Brady. The future Hall of Fame quarterback spent 23 years in the NFL (20 with the Patriots and three with the Buccaneers) and won seven Super Bowls.
Chiefs fans certainly hope that Patrick Mahomes can be the unquestioned G.O.A.T. when he's finished playing, but right now, Brady still holds that title. Mahomes has definitely given Brady a run for his money, winning three Super Bowls in five years and going back-to-back, just like Brady did early in his career.