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LAS VEGAS, NV - AUGUST 28: Boxer Floyd
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LAS VEGAS, NV - AUGUST 28: Boxer Floyd Mayweather Jr. does sit-ups as he works out at the Mayweather Boxing Club on August 28, 2013 in Las Vegas, Nevada. Mayweather will face Canelo Alvarez in a WBC/WBA 154-pound title fight on September 14 in Las Vegas. (Photo by Ethan Miller/Getty Images)(Credit: Getty Ethan Miller)

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Floyd Mayweather workout

Floyd Mayweather held a media workout for his upcoming fight against Canelo Alvarez.