LAS VEGAS, NV – MAY 02: Rapper 2 Chainz performs during the official weigh-in for WBC welterweight champion Floyd Mayweather Jr. and WBA champion Marcos Maidana at the MGM Grand Garden Arena on May 2, 2014 in Las Vegas, Nevada. Mayweather and Maidana will meet in a WBC/WBA unification fight in Las Vegas on May 3. (Photo by Ethan Miller/Getty Images)