Pierce O'Leary (boxer)

Pierce O'Leary
Personal information
Nickname
Big Bang[2]
NationalityIrish
Born (2000-02-28) 28 February 2000[2]
Height5 ft 8 in (173 cm)[2]
WeightSuper-lightweight
Boxing career
StanceOrthodox
Boxing record[1]
Total fights19
Wins19
Win by KO11

Pierce O'Leary (born 28 February 2000) is an Irish professional boxer who has held the IBO super-lightweight title since March 2026. He is also a former European and WBC International champion in the same weight division.

Career

A nine-time Irish amateur champion, O'Leary turned professional in 2019, signing a promotional contract with MTK Global.[3] He made his pro-debut on 11 October that year, defeating Oscar Amador on points over four rounds at Ulster Hall in Belfast.[4]

Unbeaten in his first 10 professional fights and now signed to Frank Warren's Queensbury Promotions, O'Leary claimed the vacant WBC International super-lightweight title thanks to a unanimous decision win over Emmanuel Mungandjela at the O2 Arena in London on 26 November 2022.[5][6]

He made the first defense of his championship at the SSE Arena in Belfast on 27 May 2023, stopping Alin Florin Ciorceri in the first round.[7]

On 23 September 2023, he retained his title with a unanimous decision victory over Kane Gardner at Wembley Arena in London.[8][9]

Two more successful defenses followed as O'Leary stopped Hovhannes Martirosyan in the ninth round at Resorts World Arena in Birmingham on 16 March 2024,[10][11] and then prevailed via unanimous decision against Darragh Foley back at the SSE Arena in Belfast on 28 June 2024.[12][13]

In his next outing, he stopped Jose Edgardo Perdomo in the third of their scheduled eight-round non-title contest at Wembley Arena in London on 7 December 2024.[14][15]

O'Leary defended his championship for the fifth time against Liam Dillon at Portman Road in Ipswich on 7 June 2025, with the vacant European super-lightweight title also on the line.[16][17] He won via unanimous decision.[18][19]

He was scheduled to face Mark Chamberlain for the vacant IBO super-lightweight title at 3Arena in Dublin on 14 March 2026.[20] However, Chamberlain withdrew two weeks before the fight was due to take place due to illness and was replaced by Maxi Hughes.[21] O'Leary won when Hughes retired on his stool at the end of the fifth round.[22][23]


Professional boxing record

19 fights 19 wins 0 losses
By knockout 11 0
By decision 8 0
No. Result Record Opponent Type Round, time Date Location Notes
19 Win 19–0 Maxi Hughes RTD 5 (12), 3:00 14 Mar 2026 3Arena, Dublin, Ireland Won vacant IBO light-welterweight title
18 Win 18–0 Braian Esequiel Ronner KO 8 (8), 0:53 6 Dec 2025 Rushcliffe Arena, Nottingham, Nottinghamshire, England
17 Win 17–0 Liam Dillon UD 12 7 Jun 2025 Portman Road, Ipswich, Suffolk, England Won vacant European super-lightweight title
16 Win 16–0 Jose Edgardo Perdomo TKO 3 (8), 1:06 7 Dec 2024 Wembley Arena, London, England
15 Win 15–0 Darragh Foley UD 10 28 Jun 2024 SSE Arena, Belfast, Northern Ireland Retained WBC International super-lightweight title
14 Win 14–0 Hovhannes Martirosyan KO 9 (10), 2:39 16 Mar 2024 bp pulse LIVE, Birmingham, West Midlands, England Retained WBC International super-lightweight title
13 Win 13–0 Kane Gardner UD 10 23 Sep 2023 Wembley Arena, London, England Retained WBC International super-lightweight title
12 Win 12–0 Alin Florin Ciorceri TKO 1 (10), 2:39 27 May 2023 SSE Arena, Belfast, Northern Ireland Retained WBC International super-lightweight title
11 Win 11–0 Emmanuel Mungandjela UD 10 26 Nov 2022 The O2 Arena, London, England Won vacant WBC International super-lightweight title
10 Win 10–0 Robin Zamora TKO 2 (8), 1:01 16 Jul 2022 Copper Box Arena, London, England
9 Win 9–0 Nathan Augustine KO 1 (8), 2:41 15 Apr 2022 York Hall, Bethnal Green, London, England
8 Win 8–0 Siar Ozgul TKO 7 (8), 1:14 29 Oct 2021 York Hall, Bethnal Green, London, England
7 Win 7–0 Jan Marsalek TKO 2 (4), 2:30 25 Jun 2021 Bolton Whites Hotel (De Vere Whites), Bolton, Lancashire, England
6 Win 6–0 Irvin Magno PTS 6 19 Feb 2021 Bolton Whites Hotel (De Vere Whites), Bolton, Lancashire, England
5 Win 5–0 Jacob Quinn TKO 4 (6), 0:21 12 Aug 2020 Production Park Studios, South Kirkby, Yorkshire, England
4 Win 4–0 Liam Richards PTS 4 1 Feb 2020 Ulster Hall, Belfast, Northern Ireland
3 Win 3–0 Alec Bazza TKO 2 (4), 1:56 20 Dec 2019 Bolton Whites Hotel (De Vere Whites), Bolton, Lancashire, England
2 Win 2–0 Chris Adaway PTS 4 16 Nov 2019 Emirates Arena, Glasgow, Scotland
1 Win 1–0 Oscar Amador PTS 4 11 Oct 2019 Ulster Hall, Belfast, Northern Ireland

References

  1. ^ "Boxing record for Pierce O'Leary". BoxRec.
  2. ^ a b c "Pierce O'Leary". tapology.com. Retrieved 21 May 2025.
  3. ^ "MTK Global Sign All-Conquering Amateur O'Leary". Fight Post. Retrieved 21 May 2025.
  4. ^ "'Everyone knows who I am now' – Dublin prospect Pierce O'Leary reacts to 'special' debut". Irish Boxing. Retrieved 21 May 2025.
  5. ^ "Boxing: Dublin 22-year-old on path to gold". Dublin Gazette. Retrieved 21 May 2025.
  6. ^ "Pierce O'Leary Dominates Mungandjela Over Ten Rounds; Tommy Fletcher Delivers Highlight Reel KO". Boxing Scene. Retrieved 21 May 2025.
  7. ^ "Pierce O'Leary records impressive first round victory on Michael Conlan v Luis Alberto Lopez undercard". Irish Mirror. Retrieved 21 May 2025.
  8. ^ "Irish Pride Prevails in Wembley: Pierce O'Leary Defends WBC International Super Lightweight Belt". wbcboxing.com. Retrieved 21 May 2025.
  9. ^ "Pierce O'Leary Fights Kane Gardner To Unanimous Decision Win". Boxing Scene. Retrieved 21 May 2025.
  10. ^ "BIG BANG – Pierce O'Leary scores another big KO". Irish Boxing. Retrieved 21 May 2025.
  11. ^ "Magnificent Seven Results: Pierce O'Leary vs Hovhannes Martirosyan". ringside24.com. Retrieved 21 May 2025.
  12. ^ "Pierce O'Leary retains WBC International belt, Conner Kelsall claims vacant Commonwealth flyweight title". TNT Sports. Retrieved 21 May 2025.
  13. ^ "Pierce O'Leary Outscores Determined Darragh Foley". Boxing Scene. Retrieved 21 May 2025.
  14. ^ "Pierce O'Leary lands knockout with perfectly timed left hook to set up big fights in 2025". Irish Mirror. Retrieved 21 May 2025.
  15. ^ "'Shark' Pierce O'Leary nearing world's best at 140lbs". Boxing Scene. Retrieved 21 May 2025.
  16. ^ "Pierce O'Leary set to face Liam Dillon for vacant European title". Boxing News Online. Retrieved 21 May 2025.
  17. ^ "Pierce O'Leary, Liam Dillon To Contest Vacant European Junior Welterweight Title On June 7". The Ring. Retrieved 21 May 2025.
  18. ^ "Pierce O'Leary outpoints Liam Dillon for European title". Boxing News Online. Retrieved 7 June 2025.
  19. ^ "Pierce O'Leary Outlasts Resilient Liam Dillon To Claim Vacant European Junior Welterweight Title". The Ring. Retrieved 7 June 2025.
  20. ^ "Pierce O'Leary is Coming Home – Dublin Date for Big Bang". Irish Boxing. Retrieved 26 January 2026.
  21. ^ "Pierce O'Leary set for Maxi Hughes test after Mark Chamberlain illness". DAZN. Retrieved 2 March 2026.
  22. ^ "Pierce O'Leary Stops Maxi Hughes After Five Rounds To Win IBO Title In Dublin". Boxing News 24/7. Retrieved 14 March 2026.
  23. ^ "Pierce O'Leary stops courageous veteran Maxi Hughes in Dublin". Boxing Scene. Retrieved 14 March 2026.
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