Entering Sunday's AFC West grudge match, Mahomes had a .792 winning percentage [95-25 (80-22 in regular season, 15-3 in postseason)] as a starting quarterback in his first eight NFL seasons.
With the victory, Mahomes (81 wins) surpassed Pro Football Hall of Famer Peyton Manning (80 wins) and Ben Roethlisberger (80) for the third-most regular-season wins by a starting quarterback in his first eight seasons in NFL history.
Only Tom Brady (86 wins) and Russell Wilson (86) have more.