Known as "Mr. Hollywood", Williams began his professional career in 2001, and in 2005 challenged the IBF super middleweight title holder Jeff Lacy, but lost via TKO. In 2007 he drew with contender Antwun Echols. Williams owns a 29-22-1 record as a professional boxer. He was one of the featured boxers in Season 3, of the boxing reality television series, which premiered September 4, 2007 on Entertainment and Sports Programming Network. Williams was eliminated in the first episode of the series.
Williams was defeated, by submission (kimura), in his Mobile Marketing Association debut against Kazushi Sakuraba on Dream 11 on October 6, 2009.