Ralph Williams entered the pros as a free agent signing of the Houston Oilers in 1981. He did not play that year due to a back injury but made the roster and played 7 games in 1982. He suited up for one game with the Oilers in 1983. In 1984, Williams signed with the expansion San Antonio Gunslingers and spent two seasons with them in the USFL. After the conclusion of the 1985 USFL season, Williams signed with the New Orleans Saints and played in 22 games for the Saints with 20 starts over two seasons (1985-86). Since his playing days ended, Williams has had a long career in law enforcement in Louisiana.
I exchanged emails with the Gunslingers' equipment manager, Billy Schott, who informed me that the Gunslingers used the same set of jerseys in both of their seasons of existence. This one worn by Williams features several team repairs. All Gunslinger offensive lineman had their jersey sleeves shortened and customized with an elastic to tighten them per Schott.