Sam Huff helped popularize pro football and was instrumental in the Giants reaching the NFL championship game six times in eight years.
Jim McMahon led the Chicago Bears to victory in Super Bowl XX. SportsCentury: Jim McMahon airs Thursday at 4 pm ET on ESPN Classic.
ESPN's look at sports in the 20th century examines the legendary long career of a quarterback/kicker.
Johnny Unitas' passing led the Baltimore Colts to victory in "The Greatest Game Ever Played." SportsCentury: Johnny Unitas airs Friday at 4 pm ET.