Floyd Joy Mayweather Jr. (né Sinclair; born February 24, 1977) is an American professional boxer and boxing promoter. He is undefeated at 50–0. Mayweather 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). In 2016, ESPN ranked him the greatest boxer, pound for pound, of the last 25 years; in 2024, they also ranked him the best boxer of the 21st century. In 2025, The Ring ranked him the greatest boxer, pound-for-pound, of the 21st century. He is referred to as one of the best defensive boxers in history: since the existence of CompuBox, Mayweather is the most accurate puncher among professional boxers, having the highest plus–minus ratio in recorded boxing history. He has a tied record with Joe Louis of 26 consecutive wins in world title fights. He also holds 24 wins (7 KOs) against former or current world titlists, and 8 wins (3 KOs) against International Boxing Hall of Fame inductees. He was inducted into the International Boxing Hall of Fame in the class of 2021. Mayweather is one of the most lucrative pay-per-view attractions of all time, in any sport. He topped the Forbes and Sports Illustrated lists of the 50 highest-paid athletes of 2012 and 2013, and the Forbes list again in both 2014 and 2015, as the highest-paid athlete in the world. In 2006, he founded his own boxing promotional firm, Mayweather Promotions, after leaving Bob Arum's Top Rank. He has generated approximately 24 million PPV buys and $1.67 billion in revenue throughout his career. In 2018, he was the highest-paid athlete in the world, with total earnings, including endorsements, of $285 million, according to Forbes. In November, 2021, Mayweather was ranked by Sportico as the sixth highest-paid athlete of all time, with his income totaling an inflation-adjusted $1.2 billion; he stood at No. 10 when the ranking was updated in April, 2026, with his earnings estimated at inflation-adjusted $1.57 billion.