BKB 58 Miami lands in South Florida on Saturday, Aug. 29, 2026, bringing a 13-fight slate to the James L. Knight Center and multiple broadcast options for fans. Headlining BKB 58 Miami, Gustavo Trujillo defends the heavyweight title against Mark O’Neil, with additional marquee bouts featuring Yuriorkis Gamboa vs. Yesner Talavera, Aspen Ladd vs. Bianca Daimoni, and Roberto Duran Jr. vs. Ryan Spivey.
BKB 58 Key Facts
According to the promotion, BKB 58: Miami is promoted by BKB Bare Knuckle Boxing, formerly BYB Extreme. Doors open at 7 p.m. local time, with the main card scheduled for 8 p.m. ET. The main card will air on Vice TV and Telemundo Deportes Ahora.
Prelim coverage is set for TikTok, Swerve TV, and Adrenaline+. Tape-delayed broadcasts are planned on FUSE and beIN Sports, and talkSPORT on YouTube will carry coverage for viewers in the UK and Ireland.
The main event features Gustavo Trujillo vs. Mark O’Neil for the BKB Heavyweight World Championship. Trujillo enters with an 8-0 promotional record, all by first-round knockout.
Gamboa, the card’s most accomplished name, is set for his bare-knuckle debut after winning flyweight gold at the 2004 Athens Olympics and later unifying the WBA and IBF featherweight titles.
BKB contests take place inside the Trigon, a three-sided cage with 60-degree corners that differs from a traditional ring. The event is open to fans aged 16 and over.
Roberto Duran Jr., who stopped Joshua Sikes by second-round TKO at BYB 37 in 2025, returns to action in Miami. “This is my city, my home, and I’m bringing that energy into the Trigon,” Duran Jr. said, adding that he is focused on building his own legacy as he meets Spivey.
“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,” BKB CEO David Tetreault said, calling Duran Jr. vs. Spivey the type of matchup fans expect.
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Gas prices during major sporting weekends, including late August events, have drawn scrutiny, with gas prices mid-August hit record high for the season impacting travel costs for some fans.
Every Announced Bout at BKB 58 Miami
Per BKB Bare Knuckle Boxing. Bouts announced as of publication.
- Main event: Gustavo Trujillo vs. Mark O’Neil, BKB Heavyweight World Championship
- Co-main: Yuriorkis Gamboa vs. Yesner Talavera, Gamboa’s bare-knuckle debut
- Main card: Alberto Blas vs. Brandon Birr, BKB Super Featherweight title
- Featured: Roberto Duran Jr. vs. Ryan Spivey
- Featured: Aspen Ladd vs. Bianca Daimoni, Ladd’s BKB debut
Yuriorkis Gamboa previously captured Olympic gold representing the Olympic movement, adding further intrigue to his transition into bare-knuckle competition.