Floyd Joy Mayweather Jr. (né Sinclair; born February 24, 1977) is an American boxing promoter and former professional boxer who competed between 1996 and 2017. He retired with an undefeated record and won 15 major world championships spanning five weight classes from super featherweight to light middleweight. This includes the Ring magazine title in three weight classes. As an amateur, he won a bronze medal in the featherweight division at the 1996 Olympics, three U.S. Golden Gloves championships (at light flyweight, flyweight, and featherweight), and the U.S. national championship at featherweight. After retiring from professional boxing in August 2017, he transitioned to exhibition boxing.
As of July 2025, BoxRec ranks him the third greatest boxer of all time, pound for pound. Mayweather was named "Fighter of the Decade" for the 2010s by the Boxing Writers Association of America (BWAA) and The Sporting News, a two-time winner of The Ring magazine's Fighter of the Year award (1998 and 2007), a three-time winner of the BWAA Fighter of the Year award (2007, 2013, and 2015), and a six-time winner of the Best Fighter ESPY Award (2007–2010, 2012–2014).