Respected Cuban trainer Pedro Diaz will now train Tim Tszyu at Mundo Boxing in Miami, Florida. Former WBO junior middleweight champion Tszyu (25-3, 18 KOs) is turning things around after losing three of his last four fights since 2024.
Tszyu, 30, is coming off a seventh-round stoppage loss to Sebastian Fundora in their rematch on July 19, 2025 in Las Vegas. For that fight and all his previous ones during his career, Tim was trained by Igor Goloubev.
The Cuban Professor Effect
After Tszyu’s loss to Fundora, he reportedly parted ways with Goloubev and underwent a complete restructuring of his team. He now added the great Cuban coach Pedro Diaz. It makes sense for Tim to make changes as he has gone 1-3 since last year and was stopped in two of the fights.
Diaz coached the Cuban national team through four Olympic Games (1992, 1996, 2000 and 2004).
Pedro Diaz worked with these fighters
Felix Savon
Guillermo Rigondeaux
Theophilus Stevenson
Sixto Soria
Adolfo Horta
Armando Martinez
Juan Carlos Lemus
Joel Casamayor
Yuriorkis Gamboa
Odlanier Solis
Julio Gonzalez
Hector Vinent
Yan Barthelemy
Olly Campbell’s take: Why Diaz could fail
It is doubtful that coach Pedro Diaz will be able to make the drastic changes necessary for Tim Tszyu to return to his old form. He is now 30 years old and took a lot of punishment in his first fight with Fundora on March 30, 2024. He lost that fight by a 12-round split decision.
Tszyu also took a beating in his third-round knockout loss to IBF 154-lb champion Bakhram Murtazaliev on October 19, 2024. He was knocked down four times in the fight and probably should have been pulled in the second round.
With all the young talent at 154, it’s going to be difficult for Tszyu to find a spot where he can win a world title. Even at his best, Tszyu struggled against fighters like Terrell Gausha and Tony Harrison.
Those fighters are not relevant in today’s top level of the junior middleweight division. This has improved dramatically over the past year.
Tim Tszyu finds a new home.⁰⁰The former super welterweight titleholder has joined forces with Miami-based world champion trainer Pedro Diaz.#ozboxing #box #tszyu #diaz pic.twitter.com/76EJWB6sxO
— Aus-Boxing.com (@ausboxing) 23 October 2025
Last updated on 24/10/2025
