“Big Bang”

Pierce O'Leary

19-0-0

Division
Super-Lightweight · 140lb
From
Ireland
Stance
orthodox
Height
173cm

Pierce O'Leary, known as Big Bang, is an Ireland super-lightweight with a professional record of 19-0-0. They last boxed against Mark Chamberlain on 1 August 2026. No next fight has been confirmed. Below is the full professional record we hold for Pierce O'Leary, current world ratings and every story we have published about them.

Pierce O'Leary next fight

Pierce O'Leary has no confirmed next fight. They last boxed on 1 August 2026. We update this page the moment a date, opponent or venue is announced, and anything reported before then appears in the news below. For everything currently on the calendar, see the full fight schedule.

Pierce O'Leary professional record

19-0-0 across 19 professional bouts.

Red corner

PierceO'Leary

“Big Bang”

19-0-0

IE

Blue corner

MarkChamberlain

“Thunder”

17-1-1

EN

Winner

Super-Lightweight · 140lb12 roundsTKO 10

Where Pierce O'Leary ranks

Pierce O'Leary is not currently rated in the world top fifteen by any of the sanctioning bodies we track. See the current world rankings.

Latest Pierce O'Leary news

Pierce O'Leary frequently asked questions

What is Pierce O'Leary's record?
Pierce O'Leary has a professional record of 19-0-0. The full bout-by-bout record, including opponents, dates and how each fight ended, is listed above.
Who does Pierce O'Leary fight next?
No next fight has been confirmed for Pierce O'Leary. This page updates as soon as one is announced.
Where is Pierce O'Leary ranked?
Pierce O'Leary is not currently rated in the world top fifteen by any of the sanctioning bodies we track.