IBO super-lightweight title · 12 rounds

Mark
Chamberlain
VS
Pierce
O'Leary

Chamberlain · TKO 10/12

Aug 1, 2026 · 3Arena, Dublin, 🇮🇪

Chamberlain going in17-1-1

O'Leary going in19-0-0

Confirmation✓✓ two sources

MethodTKO

Round10 of 12 · 1:37

TitleIBO super-lightweight title

Sources

English Wikipedia
side a · observed 2026-10-11
en.wikipedia.org/wiki/Mark_Chamberlain_(boxer)

✓

English Wikipedia
side b · observed 2026-10-11
en.wikipedia.org/wiki/Pierce_O'Leary_(boxer)

✓