Pierce O’Leary vs. Mark Chamberlain

*N/A

Status

Planned

Production

Queensberry Promotions

Aired

2026-08-01

Pierce O’Leary vs. Mark Chamberlain

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.