On May 5, WBC welterweight beltholder Floyd Mayweather Jr. will pursue his eighth major title in a fifth weight class when he challenges WBA 154-pound titleholder Miguel Cotto at the MGM Grand in Las Vegas. 

In the co-featured bout, unior middleweight titleholder Saul “Canelo” Alvarez will defend his WBC belt against former champ Shane Mosley.

Mayweather (42-0, 26 knockouts) is training near his home in Las Vegas. Cotto (37-2, 30 KOs) is holding camp in Orlando, Fla. Both Alvarez (39-0-1, 29 knockouts) and Mosley (46-7-1, 39 KOs) are training in Big Bear, Calif., 7,000 feet above sea level.

The following camp notes on the four “Ring Kings” are from a recent press release distributed by Golden Boy Promotions, the lead promoter of the HBO Pay Per View-televised event.