When was the British former professional boxer born who competed from 1997 to 2012 and who was defeated in December 2007 against Floyd Mayweather?
Floyd Mayweather Jr. vs. Juan Manuel Márquez Floyd Mayweather vs. Juan Manuel Márquez, billed as Number One/Número Uno, was a welterweight superfight which took place on September 19, 2009, at the MGM Grand Arena in Las Vegas between five-division world champion Floyd Mayweather Jr. (39–0, 25 KO) and three-division champion Juan Manuel Márquez (50–4–1, 37 KO). The fight served as a return to the ring for Mayweather, who, after his knock out victory of Ricky Hatton in December 2007, announced he would take a two-year layoff from boxing which later turned into retirement.
Floyd Mayweather Jr. Floyd Joy Mayweather Jr. (born Floyd Joy Sinclair; February 24, 1977) is an American professional boxing promoter and former professional boxer. He competed from 1996 to 2007 and 2009 to 2015, and made a one-fight comeback in 2017. During his career, he held 15 world titles in five weight classes and the lineal championship in four different weight classes (twice at welterweight), and retired with an undefeated record of 50–0, surpassing Rocky Marciano's record of 49–0. As an amateur, Mayweather 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.