According to the World Boxing Council, WBC welterweight champion Floyd Mayweather Jr. (43-0, 26KOs) weighed in at 148.2-pounds on April 4th, as part of the organization's 30-day weigh-in requirement. By this point, Mayweather is likely less than a pound away from the welterweight limit. As BoxingScene.com previously reported, mandatory challenger Robert "The Ghost" Guerrero (31-1-1, 18KOs) weighed in at 159-pounds when the WBC conducted their 30-day weight check. The fight takes place on May 4th at the MGM Grand in Las Vegas. Showtime Pay-Per-View will carry the event.