Boxers / Gary O'Sullivan / Boxerbook rating

Gary O'Sullivan: Boxerbook rating

Gary O'Sullivan has a Boxerbook rating of 1748 ± 153 from 38 counted bouts, as of Oct 13, 2026. Not in a division list: inactive since Oct 2025 (no bout for 12 months).

Rating1748 ± 153
Placenot listed
Counted bouts38
Unknown opponents29 of 38
Schedule, career1277
Schedule, 36 months1100
Form, last 51.6 of 3.5
Data confidence24%
Statusinactive since Oct 2025

Rating over time

high 1899 · low 1561Jan 2008Oct 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: 29 of 38 bouts.

W
Mateusz Pawlowski (no page: counted as 1100)
Oct 10, 2025 · PTS 6/6 · weight ×0.90
+6
→ 1748
L
Sofiane Khati (no page: counted as 1100)
Mar 17, 2024 · PTS 8/8 · weight ×1.00
−74
→ 1742
L
Erislandy Lara
For WBA middleweight title
May 28, 2022 · TKO 7/12 · weight ×1.65 · opponent 2177
−23
→ 1816
W
Nodar Robakidze (no page: counted as 1100)
May 29, 2021 · UD 6/6 · weight ×0.90
+4
→ 1839
L
Jaime Munguia
Jan 11, 2020 · TKO 11/12 · weight ×1.10 · opponent 2224
−12
→ 1835
W
Khiary Gray (no page: counted as 1100)
Mar 16, 2019 · TKO 6/10 · weight ×1.05
+4
→ 1847
W
Gabor Gorbics (no page: counted as 1100)
Dec 7, 2018 · PTS 8/8 · weight ×1.00
+4
→ 1843
L
David Lemieux
WBA World Title Eliminator
Sep 15, 2018 · KO 1/12 · weight ×1.65 · opponent 2060
−44
→ 1840
W
Berlin Abreu (no page: counted as 1100)
May 4, 2018 · KO 3/10 · weight ×1.05
+4
→ 1883
W
Antoine Douglas
Won vacant WBO Inter-Continental middleweight title
Dec 16, 2017 · TKO 7/10 · weight ×1.10 · opponent 1677
+34
→ 1879
W
Nick Quigley (no page: counted as 1100)
Sep 30, 2017 · TKO 4/10 · weight ×1.05
+5
→ 1845
W
Chauncey Fields (no page: counted as 1100)
May 13, 2017 · KO 2/8 · weight ×1.00
+5
→ 1840
W
Ronald Montes (no page: counted as 1100)
Mar 18, 2017 · RTD 3/8 · weight ×1.00
+5
→ 1835
W
Jaime Barboza (no page: counted as 1100)
Sep 17, 2016 · UD 8/8 · weight ×1.00
+5
→ 1830
L
Chris Eubank Jr
Dec 12, 2015 · RTD 7/12 · weight ×1.10 · opponent 1971
−48
→ 1825
W
David Toribio (no page: counted as 1100)
Oct 10, 2015 · KO 2/10 · weight ×1.05
+5
→ 1874
W
Melvin Betancourt (no page: counted as 1100)
May 23, 2015 · KO 2/10 · weight ×1.05
+5
→ 1868
W
Milton Núñez
Mar 14, 2015 · TKO 3/8 · weight ×1.00 · opponent 1387
+11
→ 1863
W
Larry Smith (no page: counted as 1100)
Feb 26, 2015 · TKO 2/6 · weight ×0.90
+5
→ 1852
W
Anthony Fitzgerald (no page: counted as 1100)
Nov 15, 2014 · TKO 1/10 · weight ×1.05
+6
→ 1847
Show all 38 counted bouts
W
Jose Medina (no page: counted as 1100)
Jun 5, 2014 · MD 6/6 · weight ×0.90
+5
→ 1841
L
Billy Joe Saunders
For WBO International middleweight title
Jul 20, 2013 · UD 12/12 · weight ×1.16 · opponent 1990
−64
→ 1835
W
Tadas Jonkus (no page: counted as 1100)
Retained WBO International middleweight title
May 3, 2013 · TKO 3/8 · weight ×1.05
+6
→ 1899
W
Matthew Hall
Won vacant WBO International middleweight title
Jul 14, 2012 · UD 12/12 · weight ×1.16 · opponent 1648
+56
→ 1893
W
Paul Morby (no page: counted as 1100)
Mar 10, 2012 · PTS 6/6 · weight ×0.90
+9
→ 1836
W
Robert Long (no page: counted as 1100)
Retained Irish middleweight title
Jun 25, 2011 · TKO 1/10 · weight ×1.10
+11
→ 1828
W
Ryan Clark (no page: counted as 1100)
May 21, 2011 · KO 1/4 · weight ×0.80
+9
→ 1817
W
Sylvain Touzet (no page: counted as 1100)
Jun 26, 2010 · TKO 3/6 · weight ×0.90
+10
→ 1808
W
Ciaran Healy (no page: counted as 1100)
Won vacant Irish middleweight title
Dec 14, 2009 · PTS 10/10 · weight ×1.10
+13
→ 1798
W
Arturs Jaskuls (no page: counted as 1100)
Jul 25, 2009 · PTS 6/6 · weight ×0.90
+12
→ 1785
W
Marcin Piatkowski (no page: counted as 1100)
Apr 25, 2009 · KO 1/6 · weight ×0.90
+13
→ 1773
W
Jimmy LeBlanc (no page: counted as 1100)
Mar 14, 2009 · DQ 4/8 · weight ×1.00
+16
→ 1760
W
Idiozan Matos (no page: counted as 1100)
Oct 26, 2008 · TKO 3/6 · weight ×0.90
+16
→ 1745
W
Sergejs Volodins
Sep 13, 2008 · RTD 1/6 · weight ×0.90 · opponent 1500
+71
→ 1729
W
Eugen Stan (no page: counted as 1100)
Jul 5, 2008 · PTS 6/6 · weight ×0.90
+28
→ 1658
W
Tye Williams (no page: counted as 1100)
Apr 15, 2008 · TKO 1/4 · weight ×0.80
+31
→ 1630
W
Robert Harris (no page: counted as 1100)
Mar 15, 2008 · TKO 1/4 · weight ×0.80
+39
→ 1599
W
Peter Dunn (no page: counted as 1100)
Jan 26, 2008 · TKO 6/6 · weight ×0.90
+61
→ 1561

Publishers and Boxerbook

Consensus: no publisher lists for the division (a list without them counts as 16).

WBC
not in top 15
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
not listed

How the Boxerbook rating works · Gary O'Sullivan: record and titles