DeWit had an uneventful pro career, and was knocked down four times in a crushing 2nd round TKO defeat to Bert Cooper in 1987. The loss to Cooper was DeWit's only career defeat, as he retired after six consecutive wins, the last of which being a decision victory over Henry Tillman.
Although DeWit had lost only once, he was still the Canadian champion and appeared to have rebounded from his loss to Cooper. Instead he chose to retire and go to law school. DeWit now (2005) lives comfortably as a criminal defence lawyer.