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Pierce O’Leary vs Mark Chamberlain Live Stream & Tips – How To Watch & Bet Live Online

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Last updated: Mon 27 Jul 2026 15:42
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  • Pierce O’Leary defends IBO world title against Mark Chamberlain
  • Bout taking place at 3Arena in Dublin, Ireland
  • O'Leary favoured to out-point Chamberlain over 12 rounds
Watch this world title fight live online!

Pierce O’Leary (19-0, 11 KOs) defends his IBO super-lightweight world title against Mark Chamberlain (17-1-1, 12 KOs) at the 3Arena in Dublin, Ireland on Saturday, August 1.

The fight can be exclusively seen globally in over 200 countries on DAZN.

These two men were originally scheduled to face in March of this year, but Chamberlain was forced to withdraw due to a chest infection and Maxi Hughes stepped in to fill the void.

Despite the change in opponent the IBO crown was still up for grabs, and former European champion O’Leary was able to complete his rise to the summit as he stopped Hughes inside five rounds to delight his home crowd.

The 26-year-old will now make his first defence of the crown in the same venue where he won it – the 3Arena in Dublin – and he will do it against the man he should have faced earlier this year.

Chamberlain is a former European lightweight champion, and despite landing this shot at a world title, he has seen his career stall over the past couple of years with just one win coming in his last three fights.

He suffered his first ever loss in September 2024 when he was out-pointed by Josh Padley, and despite rebounding with a decision win over Miguel Angel, he was unable to build on that success.

Chamberlain went to a majority draw with Jack Rafferty last August – when he challenged for the British and Commonwealth super-lightweight titles – so can he rebound and become a world champion for the first time, or will O’Leary get the job done and move on to bigger and better things?

You can see for yourself thanks to DAZN’s global live streaming service, which is broadcasting the fight live from Dublin.

How To Stream O’Leary vs Chamberlain


Here’s how to stream Pierce O’Leary vs Mark Chamberlain live online:

  1. Visit DAZN Global
  2. Log into your account or register for a new one
  3. Sign up for a basic subscription or get the DAZN Ultimate Package (PPV fights included at no additional cost)
  4. Watch Pierce O’Leary vs Mark Chamberlain live online.

What Time Does Pierce O’Leary vs Mark Chamberlain Start?


The Pierce O’Leary vs Mark Chamberlain main card is scheduled to get underway at approximately 19:00 BST / 14:00 ET.

O’Leary and Chamberlain are expected to make their ringwalks at approximately 22:00 BST / 17:00 ET.

Who Is Fighting On The Pierce O’Leary vs Mark Chamberlain Card?


Pierce O’Leary vs Mark Chamberlain: IBO Super-Lightweight Title
Royston Barney-Smith vs Reece Bellotti
Gary Cully vs Lee Reeves
Steven Cairns vs Senan Kelly
Ben Fail vs Craig O’Brien
Machlan Arthur vs TBA
Adam Olaniyan vs TBA
Bobbi Flood vs TBA
Sean McComb vs TBA

Verdict

Mark Chamberlain has a reach advantage that is likely to pose some problems for Pierce O’Leary, but we expect the Irishman to solve that riddle.

He can get in-and-out, land combinations to the body, and get out without taking too much damage, earning himself the nod from the judges.

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leigh-copson
Leigh Copson

Sports Editor • 25+ Years Experience, US & Combat Sports Specialist

During his career he has covered some of the biggest sporting events on the planet, including the Super Bowl, the Champions League Final and the World Cup Final. He has also covered almost every major boxing match and UFC fight card during this time.. His specialist sports are American Football, Basketball, Ice Hockey, Boxing, Mixed Martial Arts and Football.


Follow more of Leigh's work on Muckrack.

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