 He went on to successfully defend the title an impressive 11 times.In 1994 he had a technical draw against Vincent Pettway, and in the rematch later that year Pettway KO'd Rosi, ending his long reign.In 1995 he took on WBO light-middleweight title holder Verno Phillips and won a decision, but Rosi failed a drug test and Phillips was reinstated as champion.