Billy Sims official Oklahoma Sooners #20 Jersey. Signed by Billy Sims #20 who won the Heisman in 1978. Size XL/52. JSA authentication sticker # J75374 and Letter of Authenticity from SIG Auctions. Billy Ray Sims (born September 18, 1955) is an American former football running back who played in the National Football League (NFL) for five seasons from 1980 to 1984. Sims played college football for the Oklahoma Sooners, where he was a two-time consensus All-American, and won the Heisman Trophy in 1978. He was the first overall pick in the 1980 NFL Draft, selected by the Detroit Lions.