He is an uncle of former Florida Gators cornerback Keiwan Ratliff and light middleweight boxer Durrell Richardson.
Richardson's professional boxing career peaked in February 1991, when he scored an upset victory over Raúl Pérez and won the WBC world bantamweight title.
Trained by Earl Charity, Richardson's quick reflexes were credited with earning him a 12-round unanimous decision over Perez, who held the title for almost 28 months.
He defended the title against Victor Rabanales,[2] before losing the belt to Joichiro Tatsuyoshi in 1991.
In 1992 he moved down in weight to take on WBC super flyweight title holder Moon Sung-kil, but lost a majority decision.