Pierce O'Leary - Marc Chamberlain: betting tip (cf 1.37) and bets on the fight

Current form

Pierce O'Leary last entered the ring in March, when he confidently dealt with Maxi Hughes and stopped him in the third round. This victory earned O'Leary the vacant IBO title. The 26-year-old boxer from Dublin is approaching the fight with a perfect professional record of 19 wins in 19 fights, 11 of them ended by knockout. During his professional career, he has played 104 rounds since his debut in 2019. Before turning professional, O'Leary went through a serious amateur boxing school: he started training at the age of seven, became the Irish amateur champion nine times and won 140 victories in 150 fights.

Pierce is 173 cm tall and has a 172 cm arm span. The Irishman doesn't have outstanding size, but he makes up for it with speed, pressure and good work at the middle distance. His knockout rate is 58 percent—O'Leary has stopped nine of his last 13 opponents.

In 2022, he won the WBC International Junior Welterweight title by defeating Emmanuel Munganjela by unanimous decision. After that, he successfully defended the belt five times. In June 2025, the Irishman added the European title to the collection, defeating Liam Dillon in a 12-round match. Notable victories for O'Leary include fights against Darrag Foley, Hovhannes Martirosyan, Robin Zamora and Kane Gardner.

Current form

Mark Chamberlain last entered the ring a year ago. Then he had a tough 10-round fight with Jack Rafferty for the British and Commonwealth titles, ending the meeting with a draw. Chamberlain, 27, is a southpaw with a professional record of 17 wins, 1 loss and 1 draw. He has 12 wins by knockout. He has completed 91 professional rounds since 2018. In amateur boxing, the Briton also achieved success, becoming the British amateur lightweight champion.

Chamberlain's height is 175 cm, which is 2 cm more than O'Leary's. The span of the Englishman's arms is not officially specified. At the same time, he surpasses his opponent in terms of the percentage of early victories — 70.6 percent of his victories came from knockouts. In 2022, the Portsmouth native won the IBF European Lightweight title by defeating Marc Vidal. He later defended this belt three times. In 2024, the Briton knocked out Gavin Gwynne in the fourth round and won the WBA intercontinental title, and then added the WBC silver belt after defeating Joshua Oluwaseun Wahab. Chamberlain suffered the only defeat in his career from Josh Padley in 2024. Then he lost by unanimous decision, having been knocked down in the eighth round.