Boxing. Pierce O'Leary (Ireland, 19-0, 11 KOs) vs Mark Chamberlain (United Kingdom, 17-1-1, 12 KOs). Full Fight Highlights. Undefeated Dublin fighter Pierce “Big Bang” O'Leary returned home to face dangerous British southpaw Mark Chamberlain in a highly anticipated showdown at the 3Arena. The pair had originally been scheduled to meet months earlier before Chamberlain was forced to withdraw through illness. Now, with O'Leary entering as champion in front of his hometown crowd and the heavy-handed Chamberlain determined to seize his opportunity, two aggressive fighters finally collided in a fight that promised action from the opening bell. 🏆 Title on the line: IBO World Super Lightweight Championship 📅 Date: August 1, 2026 📍 Venue: 3Arena, Dublin, Ireland 👨‍⚖️ Referee: Leszek Jankowiak 🥊 Become a sponsor & get even more explosive fight highlights ➡️ https://www.youtube.com/channel/UC5YLPwl-Y4w6R2qrW9SABMQ/join 💪 Thank you, champ! Footage rights provided by WSC Sports - https://tinyurl.com/TimelessBoxing #PierceOLeary #MarkChamberlain #Boxing #OLearyChamberlain #BoxingHighlights #sports #TimelessBoxing