WBC interim-welterweight champion Robert "The Ghost" Guerrero (31-1-1, 18KOs) took part in the WBC's mandatory 30-day weigh-in. Guerrero stepped on the scale at an even 159-pounds,, which is 12 north above the welterweight division limit of 147. Guerrero challenges full WBC champion Floyd Mayweather Jr. (43-0, 26KOs) on May 4th at the MGM Grand in Las Vegas. Showtime Pay-Per-View will televise.
