Uly Diaz says Miami’s BKB 58 crowd will see a familiar local fighter with a very direct plan when he meets undefeated fellow Miamian Jonathan Fuentes on Saturday, August 29. Diaz faces Fuentes in a super featherweight bout at the James L. Knight Center, part of a 13-fight BKB Bare Knuckle Boxing card.
Diaz, known as “Monster,” is not trying to turn fight week into a guessing game. His message is simple: Fuentes may bring an unbeaten record into the Trigon, but Diaz believes the matchup will offer a type of pressure his opponent has not handled before.
Uly Diaz Promises Fireworks Against Undefeated Jonathan Fuentes at BKB 58
“What I know about my opponent is he’s also a Miami guy. He’s undefeated. But I think he’s never been in a real fight. He’s never fought anybody who’s coming to bring a fight to him,” Diaz said. “What he’s going to find out August 29 is he’s going up against a dog. And a dog who has been through wars. I’ll see you in the Trigon. I’ll let my fists do the talking.”
For Diaz, the local angle adds an extra hook to a card already built around Miami names and established combat-sports figures. He and Fuentes will share the bill with former Olympic gold medalist and multi-division boxing champion Yuriorkis Gamboa, who is scheduled to make his bare-knuckle debut against Yesner Talavera. BKB heavyweight champion Gustavo Trujillo headlines against Mark O’Neil.
Diaz brings prior bare-knuckle experience to the matchup. His BKFC record stands at 5-3, with wins over Brian Maxwell, Donelei Benedetto and Sawyer Depee, alongside fights against former UFC contenders Thiago Alves and Francesco Ricchi.
That background helps explain the tone of his assessment. Diaz is pitching the bout as a test of whether Fuentes can stay composed when he is forced into exchanges and made to work in close quarters. Bare-knuckle boxing rarely gives fighters much room to settle into a slow rhythm, especially in BKB’s three-sided Trigon ring, where angles and exits differ from a conventional four-rope boxing ring.
Fuentes’ undefeated status gives the contest a clear storyline, while Diaz has leaned into the role of the veteran who wants to disrupt that run. The two Miami fighters are scheduled in the ninth bout on the announced card, with their contest listed at super featherweight.
The card is headed by Trujillo’s heavyweight title defense against O’Neil. Trujillo is listed with an 8-0 BKB record, with each of those wins recorded as a first-round knockout. The event also includes Alberto Blas vs. Brandon Birr for the BKB super featherweight title, Roberto Duran Jr. vs. Ryan Spivey, and Aspen Ladd’s bare-knuckle debut against Bianca Daimoni.
