Floyd Mayweather (48-0, 26 KO's), a 12-time world champion in five weight divisions, remains boxing's biggest attraction, wowing crowds and generating record numbers every time he steps into the ring. In fact, Mayweather was recently named the world's highest paid athlete by "Forbes" magazine for a second consecutive year. During his extraordinary career, he has amassed wins over world champions such as Manny Pacquiao, Diego Corrales, Jose Luis Castillo, Arturo Gatti, Zab br Judah, Oscar de la Hoya, Ricky Hatton, Juan Manuel Marquez, Shane Mosley, Miguel Cotto, Robert Guerrero and Canelo Alvarez.br br Andre Berto (30-3, 23 KO's), of Winter Haven, Fla. is a former amateur standout and 2004 Olympian for Haiti.A veteran of eight world title fights, all at 147 pounds, he won the WBC Welterweight World br br Title in June 2008 and made five successful title defenses over the next two and a half years before losing the title in April 2011. Berto won the IBF Welterweight World Title in September 2011. Style-wise, the 5-foot-7 Berto is expected to adopt an aggressive approach with a high punch output, similar to the strategy employed by Marcos Maidana in his first fight against Mayweather. If Mayweather fails to display his trademark speed and defense, Berto could use his power and hand speed to br make Mayweather uncomfortable and force him into a brawl. br br "HIGH STAKES: Mayweather vs. Berto,"br a 12-round welterweight world championship bout for br Mayweather's WBC and WBA 147-pound titles, is br promoted by Mayweather Promotions LLC. The br event will take place Saturday, September 12 at MGbr M Grand in Las Vegas and will be televised by br SHOWTIME PPV. The undercard features a WBO Junior Lightweight World Championship fight, br which is a rematch between Roman Martinez and Orlando Salido that is presented in association br with PR Best Boxing. Also featured on the PPV br telecast will be a WBC Super Middleweight title bout br between Badou Jack and George Groves, which is promoted in association with Team Sauerland.