Mike Tyson
In 1992, he was convicted of the rape of Desiree Washington, and served three years in prison. When he was released he started boxing again and won a few heavyweight titles. His first fight after jail was against Peter McNeeley which he won almost with ease. Evander Holyfield was the first fighter to beat him in his return. In the rematch he infamously bit a part off of Holyfields ear. Tyson also fought Lennox Lewis, who beat him, too. He retired from boxing in 2005.