Pierce O’Leary vs. Mark Chamberlain (01/08/2026)

Production : Queensberry Promotions, DAZN

Synopsis

The Big Bang, Pierce O’Leary, will once again be the star turn at the 3Arena in his home city of Dublin, when he goes up against Mark Chamberlain in a first defence of his IBO world super lightweight title.

Pierce O'Leary

Mark Chamberlain

Royston Barney Smith

Reece Bellotti