John Alan Williams (born October 26, 1960) is an American former professional football player who was a running back in the National Football League (NFL) for the Dallas Cowboys, Seattle Seahawks, New Orleans Saints and Indianapolis Colts.
He also was a member of the Michigan Panthers and Oakland Invaders in the United States Football League (USFL).
Williams attended Reeths Puffer High School, where he practiced football and track.
He suffered a toe injury and did not play in the 24–22 title win over the Atlantic Division champion Philadelphia Stars.
He tallied 177 rushing yards in the first-round 21-27 playoff loss against the Los Angeles Express, which at the time was the longest game in professional football history.
He helped the team reach the USFL championship game where it suffered a 24–28 loss against the Baltimore Stars.
On August 15, 1985, he signed as a free agent with the Dallas Cowboys after the Oakland Invaders folded.
[5] On September 8, 1987, he was claimed off waivers by the Indianapolis Colts to replace an injured Owen Gill.
[7] In 1988, he signed with the Calgary Stampeders of the Canadian Football League, reuniting with head coach Lary Kuharich, who was his offensive coordinator with the Oakland Invaders.