Floyd Mayweather to face Andre Berto Sept. 12 on Showtime PPV
Floyd Mayweather Jr. announces Sept. 12 fight with Andre Berto - Newsday
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Retirement is appealing for Floyd Mayweather after Andre Berto bout but 'nobody knows what future holds
Floyd Mayweather Jr. Dominates Andre Berto in Farewell Fight, News
Floyd Mayweather should fight Lucas Matthysse, not Andre Berto – Daily News
Floyd Mayweather Jr. vs. Andre Berto - Wikipedia
Floyd Mayweather insists Andre Berto fight is his last - The Boston Globe
Mayweather to fight Andre Berto on September 12
Floyd Mayweather Wants to Retire As 'The Best Ever
Floyd Mayweather Jr retires from boxing after defeating Andre Berto
Andre Berto defends Floyd Mayweather's decision to retire