BY: ESPN.COM

 

As Floyd Mayweather Jr. is so fond of saying, 42 have tried to best him in a professional ring, and 42 have failed. But very few of them had the skills and experience of Mayweather's next opponent, junior middleweight titlist Miguel Cotto. Fewer still had the edge Cotto will enjoy Saturday at the MGM Grand in Las Vegas (HBO pay-per-view, 9 p.m. ET): a slight weight advantage, which Mayweather has been so loath to give away in past fights. But is Cotto, 31,…

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