Moon was 28 when he came to the NFL after five consecutive Grey Cup championships for the Edmonton Eskimos of the Canadian Football League. From his rookie year with the Houston Oilers in 1984 to his final days as a 44-year-old back-up in Kansas City, Moon completed nearly 4,000 passes for 49,335 yards and 291 TDs. He is a member of both the CFL and NFL Halls of Fame.
Text: Lee Feiner/SI.com
Photo: John Iacono/SI