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). Floyd Mayweather Jr. vs. Juan Manuel Márquez:  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. Ricky Hatton: Richard John Hatton, {'1': ", '2': ", '3': ", '4': "} (born 6 October 1978) is a British former professional boxer who competed from 1997 to 2012, and has since worked as a boxing promoter and trainer.
6 October 1978