Bare Knuckle Boxing's next event takes place on Aug. 29 in Miami. The card is complete with 13 fights. The highlight fights are Gustavo Trujillo vs. Mark O'Neil, Yuriorkis Gamboa vs. Yesner Talavera, Aspen Ladd vs. Bianca Daimoni and Roberto Duran Jr. vs. Ryan Spivey. Duran is the son of boxing legend, Roberto Duran. Let's talk bare knuckle boxing.

Trujillo defends the BKB heavyweight title in the main event carrying an 8-0 promotional record with every win a first-round knockout. Gamboa is the bigger name on the card. The Cuban won flyweight gold at the 2004 Athens Olympics and later unified the WBA and IBF featherweight titles, and this is his bare-knuckle debut. BKB fights inside the Trigon , a three-sided cage with 60-degree corners rather than a ring.

Duran Jr. is not a newcomer to BKB. He fought for the promotion in 2025 in a battle with Joshua Sikes at BYB 37. Duran won the fight by second-round TKO.

"This is my city, my home, and I'm bringing that energy into the Trigon," Duran Jr. said. "My father sealed his envelope a long time ago, this is about my own legacy now. Spivey's tough, but I've got business to finish and I'm going to finish it in front of my people in Miami."

"Robert Duran Jr. carries one of the great names in boxing history and he's proven time and again that he can back it up inside the Trigon," said David Tetreault, BKB CEO. "Putting him in Miami against a fighter like Ryan Spivey, who's earned every bit of his growing reputation, is exactly the kind of matchup our fans expect from BKB. This is must-see action."

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Every Announced Bout at BKB 58

Per BKB Bare Knuckle Boxing . Bouts announced as of publication.