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Floyd Joy "Money" Mayweather, Jr. (born Floyd Sinclair on February 24, 1977), is an American professional boxer. He is undefeated as a professional, with a record of 39–0 (25 KOs). He is the son of Floyd Mayweather, Sr., a former welterweight boxing contender.
From July 18, 2005 through June 2, 2008 he was rated by The Ring magazine as the number-one pound for pound boxer in the world.[1] Mayweather has won six world boxing championships in five different weight classes; he is the former WBC welterweight champion, a title he vacated upon his retirement. He was named Ring Magazine Fighter of the Year in 1998 and 2007. ESPN.com listed Mayweather at #48 on their "50 Greatest Boxers of All Time" list.
On May 1, 2009, it was confirmed that Mayweather is coming out of a 16-month retirement to fight Juan Manuel Márquez at a catchweight of 144 lbs. on July 18 at the MGM Grand in Las Vegas on HBO PPV. [38] The fight has been postponed due to a rib injury Mayweather received during training. The fight will now take place on September 19, 2009 in conjunction with Mexican Independence Day, traditionally a big boxing weekend.
Juan Manuel "Dinamita" Márquez Méndez (born August 23, 1973, in Mexico City), is a Mexican professional boxer and the current WBA and WBO Lightweight world champion as well as the current Ring Magazine Lightweight champion. He has also held the IBF, WBA, and WBO Featherweight titles, and the WBC Super Featherweight title. He is the fourth Mexican boxer to become a world champion in three different weight classes after Marco Antonio Barrera, Érik Morales, and Julio César Chávez.