Pierce O'Leary

Born2000-02-28

Sexmale

Career

19-1-0(KO 11)20 bouts, 2019–2026

L2026-08-01 ›(19-0-0) vs Mark Chamberlain 🇬🇧 (17-1-1) TKO 10/123Arena, Dublin, 🇮🇪Won IBO super-lightweight title✓✓ two sources

W2026-03-14 ›(18-0-0) vs Maxi Hughes (29-8-2) RTD 5/123Arena, Dublin, 🇮🇪Won vacant IBO super-lightweight title✓✓ two sources

W2025-12-06 ›(17-0-0) vs Braian Esequiel Ronner KO 8/8Rushcliffe Arena, Nottingham, 🇬🇧✓ one source

W2025-06-07 ›(16-0-0) vs Liam Dillon 🇬🇧 UD 12/12Portman Road, Ipswich, 🇬🇧Won vacant European super-lightweight title✓ one source

W2024-12-07 ›(15-0-0) vs Jose Edgardo Perdomo TKO 3/8Wembley Arena, London, 🇬🇧✓ one source

W2024-06-28 ›(14-0-0) vs Darragh Foley UD 10/10SSE Arena, Belfast, 🇬🇧Retained WBC International super-lightweight title✓ one source

W2024-03-16 ›(13-0-0) vs Hovhannes Martirosyan KO 9/10bp pulse LIVE, Birmingham, 🇬🇧Retained WBC International super-lightweight title✓ one source

W2023-09-23 ›(12-0-0) vs Kane Gardner UD 10/10Wembley Arena, London, 🇬🇧Retained WBC International super-lightweight title✓ one source

W2023-05-27 ›(11-0-0) vs Alin Florin Ciorceri TKO 1/10SSE Arena, Belfast, 🇬🇧Retained WBC International super-lightweight title✓ one source

W2022-11-26 ›(10-0-0) vs Emmanuel Mungandjela UD 10/10The O2 Arena, London, 🇬🇧Won vacant WBC International super-lightweight title✓ one source

W2022-07-16 ›(9-0-0) vs Robin Zamora TKO 2/8Copper Box Arena, London, 🇬🇧✓ one source

W2022-04-15 ›(8-0-0) vs Nathan Augustine KO 1/8York Hall, Bethnal Green, 🇬🇧✓ one source

W2021-10-29 ›(7-0-0) vs Siar Ozgul TKO 7/8York Hall, Bethnal Green, 🇬🇧✓ one source

W2021-06-25 ›(6-0-0) vs Jan Marsalek TKO 2/4Bolton Whites Hotel (De Vere Whites), Bolton, 🇬🇧✓ one source

W2021-02-19 ›(5-0-0) vs Irvin Magno PTS 6/6Bolton Whites Hotel (De Vere Whites), Bolton, 🇬🇧✓ one source

W2020-08-12 ›(4-0-0) vs Jacob Quinn TKO 4/6Production Park Studios, South Kirkby, 🇬🇧✓ one source

W2020-02-01 ›(3-0-0) vs Liam Richards PTS 4/4Ulster Hall, Belfast, 🇬🇧✓ one source

W2019-12-20 ›(2-0-0) vs Alec Bazza TKO 2/4Bolton Whites Hotel (De Vere Whites), Bolton, 🇬🇧✓ one source

W2019-11-16 ›(1-0-0) vs Chris Adaway PTS 4/4Emirates Arena, Glasgow, 🇬🇧✓ one source

W2019-10-11 ›(0-0-0) vs Oscar Amador PTS 4/4Ulster Hall, Belfast, 🇬🇧✓ one source

Date	Res	Opponent	Records	Method	Venue	Title	Sources
2026-08-01	L	Mark Chamberlain 🇬🇧	19-0-0 · 17-1-1	TKO 10/12	3Arena, Dublin, 🇮🇪	Won IBO super-lightweight title	✓✓ two sources
2026-03-14	W	Maxi Hughes	18-0-0 · 29-8-2	RTD 5/12	3Arena, Dublin, 🇮🇪	Won vacant IBO super-lightweight title	✓✓ two sources
2025-12-06	W	Braian Esequiel Ronner	17-0-0	KO 8/8	Rushcliffe Arena, Nottingham, 🇬🇧		✓ one source
2025-06-07	W	Liam Dillon 🇬🇧	16-0-0	UD 12/12	Portman Road, Ipswich, 🇬🇧	Won vacant European super-lightweight title	✓ one source
2024-12-07	W	Jose Edgardo Perdomo	15-0-0	TKO 3/8	Wembley Arena, London, 🇬🇧		✓ one source
2024-06-28	W	Darragh Foley	14-0-0	UD 10/10	SSE Arena, Belfast, 🇬🇧	Retained WBC International super-lightweight title	✓ one source
2024-03-16	W	Hovhannes Martirosyan	13-0-0	KO 9/10	bp pulse LIVE, Birmingham, 🇬🇧	Retained WBC International super-lightweight title	✓ one source
2023-09-23	W	Kane Gardner	12-0-0	UD 10/10	Wembley Arena, London, 🇬🇧	Retained WBC International super-lightweight title	✓ one source
2023-05-27	W	Alin Florin Ciorceri	11-0-0	TKO 1/10	SSE Arena, Belfast, 🇬🇧	Retained WBC International super-lightweight title	✓ one source
2022-11-26	W	Emmanuel Mungandjela	10-0-0	UD 10/10	The O2 Arena, London, 🇬🇧	Won vacant WBC International super-lightweight title	✓ one source
2022-07-16	W	Robin Zamora	9-0-0	TKO 2/8	Copper Box Arena, London, 🇬🇧		✓ one source
2022-04-15	W	Nathan Augustine	8-0-0	KO 1/8	York Hall, Bethnal Green, 🇬🇧		✓ one source
2021-10-29	W	Siar Ozgul	7-0-0	TKO 7/8	York Hall, Bethnal Green, 🇬🇧		✓ one source
2021-06-25	W	Jan Marsalek	6-0-0	TKO 2/4	Bolton Whites Hotel (De Vere Whites), Bolton, 🇬🇧		✓ one source
2021-02-19	W	Irvin Magno	5-0-0	PTS 6/6	Bolton Whites Hotel (De Vere Whites), Bolton, 🇬🇧		✓ one source
2020-08-12	W	Jacob Quinn	4-0-0	TKO 4/6	Production Park Studios, South Kirkby, 🇬🇧		✓ one source
2020-02-01	W	Liam Richards	3-0-0	PTS 4/4	Ulster Hall, Belfast, 🇬🇧		✓ one source
2019-12-20	W	Alec Bazza	2-0-0	TKO 2/4	Bolton Whites Hotel (De Vere Whites), Bolton, 🇬🇧		✓ one source
2019-11-16	W	Chris Adaway	1-0-0	PTS 4/4	Emirates Arena, Glasgow, 🇬🇧		✓ one source
2019-10-11	W	Oscar Amador	0-0-0	PTS 4/4	Ulster Hall, Belfast, 🇬🇧		✓ one source

Ratings now

Publisher	Division	Rank	As of
WBC	Super lightweight	#18	2026-10-01

World titles

No world title reigns recorded.

Elsewhere

Wikipedia ↗Wikidata ↗

Sources: Wikidata (CC0), English Wikipedia (CC BY-SA), publisher rankings. Last fetched: unknown. Photo: Wikimedia Commons.