He was 4-0 in lightweight title fights, 1-0 in super lightweight title matches, 8-0 in welterweight championship bouts and 3-0 in super welterweight championship bouts. The following is a more in-depth look at Mayweather's title fight success division by division: Super featherweight, 9-0, 6 KOs – Mayweather was 17-0 when he challenged the highly regarded Genaro Hernandez for his first world title on Oct. 3, 1998, eight days shy of two years from the day he turned professional. This is the class where he had some of his most impressive performances.