Mayweather won the fight by unanimous decision .
Floyd Mayweather Jr. vs. Miguel Cotto , billed as Ring Kings , was a Boxing Junior Middleweight bout held on May 5 , 2012 , at the MGM Grand Garden Arena in Las Vegas , Nevada , United States .
Floyd Mayweather Jr. won the fight by unanimous decision .
Floyd Mayweather Jr. vs. Miguel Cotto , billed as Ring Kings , was a Boxing Junior Middleweight bout held on May 5 , 2012 , at the MGM Grand Garden Arena in Las Vegas , Nevada , United States .