A one-hour special entitled “Mayweather” will be televised Saturday at 8 p.m. on CBS. It will explore the life of Floyd Mayweather Jr. as well as that of Robert “The Ghost” Guerrero.

Guerrero on May 4 will challenge Mayweather for his welterweight championship at MGM Grand in Las Vegas. It will be televised on Showtime pay-per-view; CBS is the parent company of Showtime.

The narrator for “Mayweather” will be rapper/actor LL Cool J, who will also perform his new single, “We’re the Greatest,” on the special.

Guerrero, 30, is 31-1-1 with 18 knockouts. Mayweather, 36, is 43-0 with 26 knockouts. Their fight is being promoted by Golden Boy Promotions in association with Mayweather Promotions.