​Gustavo TrujilloCredit: BKBBare knuckle boxing is having a heck of a run this summer and into the early fall. On Saturday at the James L. Knight Center in Miami, Bare Knuckle Boxing 58 will happen with three championship fights on the ledger. While the main event features Gustavo Trujillo vs. Mark O’Neil, one of the biggest fights on the card has former boxing world champion Yuriorkis Gamboa taking on Yesner Talavera. Let’s talk BKB.BKB 58 Key FactsDetailInfoMain eventGustavo Trujillo vs. Mark O’Neil, BKB heavyweight titleDateSaturday, August 29, 2026VenueJames L. Knight Center, Miami, FloridaRingThe Trigon, BKB’s three-sided fighting surfaceChampionship fightsThreePrelims start6:30 p.m. ET, 3:30 p.m. PTMain card start8:00 p.m. ET, 5:00 p.m. PTPrelims streamTikTok, Swerve TV and Adrenaline Plus, freeMain card, North AmericaVice TV and Telemundo Deportes AhoraMain card, UK and IrelandtalkSPORT, 1 a.m. BSTPay-per-viewNoTrujillo’s BKB record8-0, all eight by first-round knockoutTrujillo is also 12-0 as a professional boxer and is ranked inside the WBO’s heavyweight top 15. Gamboa won Olympic gold in 2004 and unified the WBA and IBF featherweight titles before taking this bare knuckle debut at 44. Aspen Ladd is making her BKB debut rather than her bare knuckle debut, having knocked out Shyanna Bintliff at a BKFC card last November.This is arguably the most stacked card in BKB history. There’s a plethora of recognizable names and fighters like Ryan Spivey, Trujillo and others who have already proven themselves in the sport of bare knuckle boxing. Because of the nature of the contests, the fights will likely go quick and will be stacked with action.FightKey hookGustavo Trujillo vs. Mark O’NeilHeavyweight titleYunieski Gonzalez vs. Ethan GeorgeVacant cruiserweight titleAlberto Blas vs. Brandon BirrSuper-featherweight titleYuriorkis Gamboa vs. Yesner TalaveraGamboa BKB debutRoberto Duran Jr. vs. Ryan SpiveyDuran legacy / MiamiAspen Ladd vs. Bianca DaimoniLadd BKB debutYampier Ramirez vs. Triston HarrisonFeatherweight champ moves upUly Diaz vs. Jonathan FuentesMiami veteran vs. unbeaten Miami fighterRudisel Mora vs. Giovanni RosalesUndercardTaylor Bull vs. Murat KilimetovUndercardDarrian Leu-Pierre vs. Kylle McMillanUndercardYordan Fuentes vs. Keegan VandermeerUndercardMore Bare Knuckle CoverageSon of a Boxing Legend Featured in Bare Knuckle Boxing EventFormer Boxing World Champion Makes Second Bare Knuckle Boxing AppearanceBare Knuckle Boxing CEO Shares Growth Plan and TikTok SuccessLooking AheadTrujillo is experienced in combat sports overall and he’s already made his mark in bare knuckle boxing. If he wins, there could be an intriguing fight down the road for him against rising heavyweight KO artist, Jesse “The Reaper” Sparks.At BKB 56 in Los Angeles, Sparks scored another vicious first-round KO win and cemented himself as one of the promotion’s rising stars. It might be easy to sell Trujillo-Sparks or even O’Neill-Sparks for an upcoming show