Boxers / Pierce O'Leary / Boxerbook rating

Pierce O'Leary: Boxerbook rating

Pierce O'Leary is #27 in the Boxerbook super lightweight list with a rating of 1889 ± 143 from 20 counted bouts, as of Oct 13, 2026.

Rating1889 ± 143
Place#27 in Super lightweight
Counted bouts20
Unknown opponents17 of 20
Schedule, career1202
Schedule, 36 months1393
Form, last 52.5 of 3.5
Data confidence10%
Statusactive · last bout Aug 1, 2026

Rating over time

high 2004 · low 1555Oct 2019Oct 2026

μ at the end of each month with a bout, and of every month while active. Red dot: latest.

Bouts behind the rating

Every counted bout, newest first: the change in μ it caused (green up, red down), its weight and the rating after it. Unknown opponents: 17 of 20 bouts.

L
Mark Chamberlain
For IBO super-lightweight title
Aug 1, 2026 · TKO 10/12 · weight ×1.65 · opponent 1868
−115
→ 1889
W
Maxi Hughes
Won vacant IBO super-lightweight title
Mar 14, 2026 · RTD 5/12 · weight ×1.65 · opponent 1912
+119
→ 2004
W
Braian Esequiel Ronner (no page: counted as 1100)
Dec 6, 2025 · KO 8/8 · weight ×1.00
+6
→ 1885
W
Liam Dillon
Won vacant European super-lightweight title
Jun 7, 2025 · UD 12/12 · weight ×1.16 · opponent 1569
+42
→ 1879
W
Jose Edgardo Perdomo (no page: counted as 1100)
Dec 7, 2024 · TKO 3/8 · weight ×1.00
+9
→ 1836
W
Darragh Foley (no page: counted as 1100)
Retained WBC International super-lightweight title
Jun 28, 2024 · UD 10/10 · weight ×1.10
+11
→ 1827
W
Hovhannes Martirosyan (no page: counted as 1100)
Retained WBC International super-lightweight title
Mar 16, 2024 · KO 9/10 · weight ×1.10
+12
→ 1816
W
Kane Gardner (no page: counted as 1100)
Retained WBC International super-lightweight title
Sep 23, 2023 · UD 10/10 · weight ×1.10
+12
→ 1805
W
Alin Florin Ciorceri (no page: counted as 1100)
Retained WBC International super-lightweight title
May 27, 2023 · TKO 1/10 · weight ×1.10
+13
→ 1792
W
Emmanuel Mungandjela (no page: counted as 1100)
Won vacant WBC International super-lightweight title
Nov 26, 2022 · UD 10/10 · weight ×1.10
+15
→ 1779
W
Robin Zamora (no page: counted as 1100)
Jul 16, 2022 · TKO 2/8 · weight ×1.00
+15
→ 1764
W
Nathan Augustine (no page: counted as 1100)
Apr 15, 2022 · KO 1/8 · weight ×1.00
+16
→ 1749
W
Siar Ozgul (no page: counted as 1100)
Oct 29, 2021 · TKO 7/8 · weight ×1.00
+18
→ 1733
W
Jan Marsalek (no page: counted as 1100)
Jun 25, 2021 · TKO 2/4 · weight ×0.80
+17
→ 1715
W
Irvin Magno (no page: counted as 1100)
Feb 19, 2021 · PTS 6/6 · weight ×0.90
+21
→ 1698
W
Jacob Quinn (no page: counted as 1100)
Aug 12, 2020 · TKO 4/6 · weight ×0.90
+25
→ 1677
W
Liam Richards (no page: counted as 1100)
Feb 1, 2020 · PTS 4/4 · weight ×0.80
+26
→ 1652
W
Alec Bazza (no page: counted as 1100)
Dec 20, 2019 · TKO 2/4 · weight ×0.80
+31
→ 1626
W
Chris Adaway (no page: counted as 1100)
Nov 16, 2019 · PTS 4/4 · weight ×0.80
+40
→ 1595
W
Oscar Amador (no page: counted as 1100)
Oct 11, 2019 · PTS 4/4 · weight ×0.80
+55
→ 1555

Publishers and Boxerbook

Consensus: not in the publishers’ top 15 in Super lightweight (a list without them counts as 16).

WBC as of 2026-10-01
#18
WBA
not in top 15
IBF
not in top 15
WBO
not in top 15
Ring
not in top 15
TBRB
not in top 15
Boxerbook
#27

How the Boxerbook rating works · Pierce O'Leary: record and titles