147–154 lbs Super Welterweight Floyd Mayweather Jr VS Oscar De La Hoya
2007-05-05 MGM Grand, Las Vegas, Nevada, USA WBC light middleweight title
Floyd Mayweather Jr
147–154 lbs Super Welterweight 126–130 lbs Super featherweight Floyd Mayweather Jr VS Genaro Hernandez
1998-10-03 Las Vegas Hilton, Las Vegas, Nevada, USA WBC super featherweight title
147–154 lbs Super Welterweight Floyd Mayweather Jr vs Miguel Cotto
2012-05-05 MGM Grand, Las Vegas, Nevada, USA WBA Super World light middleweight title
140–147 lbs Welterweight Floyd Mayweather Jr VS Victor Ortiz
2011-09-17 MGM Grand, Las Vegas, Nevada, USA WBC welterweight title
140–147 lbs Welterweight Floyd Mayweather Jr VS Shane Mosley
2010-05-01 MGM Grand, Las Vegas, Nevada, USA
140–147 lbs Welterweight Floyd Mayweather Jr VS Juan Manuel Marquez
2009-09-19 MGM Grand, Grand Garden Arena, Las Vegas, Nevada, USA
140–147 lbs Welterweight Floyd Mayweather Jr VS Ricky Hatton
2007-12-08 MGM Grand, Las Vegas, Nevada, USA WBC welterweight title
140–147 lbs Welterweight Floyd Mayweather Jr VS Carlos Manuel Baldomir
2006-11-04 Mandalay Bay Resort & Casino, Las Vegas, Nevada, USA WBC welterweight title International Boxing Organization...
140–147 lbs Welterweight Floyd Mayweather Jr VS Zab Judah
2006-04-08 Thomas & Mack Center, Las Vegas, Nevada, USA IBF welterweight title vacant International Boxing Organization ...
140–147 lbs Welterweight Floyd Mayweather Jr VS Sharmba Mitchell
2005-11-19 Rose Garden, Portland, Oregon, USA