Where does Patrick Mahomes rank among youngest starting Super Bowl QBs?

Patrick Mahomes will be 24 years and 138 days old when he starts Super Bowl LIV for the Kansas City Chiefs

2. Ben Roethlisberger (23, 340)

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Ben Roethlisberger became the youngest Super Bowl-winning quarterback in NFL history, leading the Steelers, in his second professional season, to a 21–10 victory over the Seattle Seahawks in Super Bowl XL at the age of 23.