HBO fought to keep Mayweather as well, but couldn’t top Showtime.
‘‘We made an aggressive and responsible pay-per-view offer,’’ HBO said in a statement from spokesman Kevin Flaherty. ‘‘Now we move on. We are focused on the best boxing franchise in the television business. We are proud of the roster of superstar fighters and emerging stars who are scheduled to appear on the multiple HBO television platforms this year.’’
Mayweather usually partners with Golden Boy Promotions to organize his fights, but the boxer essentially serves as his own promoter and cuts his own financial deals with help from adviser Al Haymon.
‘‘All the fighters and promoters out there should be applauding Floyd,’’ Ellerbe said. ‘‘He’s elevating the sport and bringing more eyeballs to it. More importantly, he’s changing the pay structure in the sport. He’s setting that bar higher for everybody.’’
Mayweather is making another big change for his next fight: He has hired his father, Floyd Sr., as his trainer. The younger Mayweather was estranged from his father for long stretches of the past several years while he trained under his uncle, Roger.
Golden Boy is working on a deal to put Mexican star Saul ‘‘Canelo’’ Alvarez on the undercard of Mayweather’s bout with Guerrero, possibly against Austin Trout. Alvarez, the WBC 154-pound champion, could be Mayweather’s next opponent in September.