No. 4: Gale Sayers
Photograph By Vernon Biever/Getty Images
Those who saw Sayers often wonder how good he could have been if he had access to today's medical advances. Knee injuries cut his career to just seven seasons, but that was enough time to get the "Kansas Comet" into the Hall of Fame. Sayers was a two-time rushing champ and five-time All-Pro. He scored a record 22 touchdowns as a rookie in 1965. One of the greatest return men in NFL history, Sayers averaged a record 30.56 yards per return.