Introduction
Gary "Spike" O'Sullivan (born 14 July 1984) is an Irish professional boxer who has formerly held the WBO International and Irish middleweight titles. He has also acted and has performed stunts in the 2007 film Strength and Honour. O'Sullivan is a member of Murphy's Boxing, a boxing promotion founded by Ken Casey of the Boston punk band Dropkick Murphys.
Boxing career
O'Sullivan vs. Hall
O'Sullivan defeated Matthew Hall in a close contest, at Upton Park, London, on 14 July 2012 on the undercard of David Haye vs. Dereck Chisora, to win the WBO intercontinental middleweight title.
O'Sullivan vs. Nunez
It was announced following this defeat of Larry Smith that O'Sullivan would take on former world contender Milton Nunez. O'Sullivan, before the fight, described the bout as "the most important fight of my life". He started the fight well with some solid body shots easily claiming the first round. He knocked Nunez down in the second round and ultimately scored an impressive victory, by TKO, over Nunez in the third round.
Professional boxing record
| 25 fights, 23 wins (15 knockouts), 2 losses | |||||||
| Res. | Record | Opponent | Type | Rd., Time | Date | Location | Notes |
| Win | 23–2 |  Jaime Barboza | UD | 8 | 2016-09-17 |  Bank of New Hampshire Pavilion, Gilford, New Hampshire | |
| Loss | 22–2 |  Chris Eubank, Jr. | RTD | 7 (12) | 2015-12-12 | The O2 Arena, Greenwich, London | WBA Middleweight title final eliminator. |
| Win | 22–1 |  David Toribio | KO | 2 (10) | 2015-10-10 | Lowell Memorial Auditorium, Lowell, Massachusetts | |
| Win | 21–1 | Melvin Betancourt | KO | 2 (10) | 2015-05-23 | Agganis Arena, Boston, Massachusetts | |
| Win | 20–1 |  Milton Núñez | TKO | 3 (8) | 2015-03-14 | Madison Square Garden, New York City, New York | |
| Win | 19–1 | Larry Smith | TKO | 2 (6) | 2015-02-26 | Memorial Hall, Melrose, Massachusetts | |
| Win | 18–1 |  Anthony Fitzgerald | TKO | 1 (10) | 2014-11-15 | 3Arena, Dublin | |
| Win | 17–1 |  Jose Medina | MD | 6 | 2014-06-05 | House of Blues, Boston, Massachusetts | |
| Loss | 16–1 | Billy Joe Saunders | UD | 12 | 2013-07-20 | Wembley Arena, Wembley, London, United Kingdom | Lost WBO International Middleweight Title. |
| Win | 16–0 |  Tadas Jonkus | TKO | 3 (8) | 2013-05-03 | Carlton Hotel Tyrrelstown, Dublin | Retained WBO International Middleweight Title. |
| Win | 15–0 | Matthew Hall | UD | 12 | 2012-07-14 | Upton Park, West Ham, London | Won vacant WBO International Middleweight Title. |
| Win | 14–0 | Paul Morby | PTS | 6 | 2012-03-10 | Braehead Arena, Glasgow | |
| Win | 13–0 | Robert Long | TKO | 1 (10) | 2011-06-25 | National Stadium, Dublin | Retained Irish Middleweight Title. |
| Win | 12–0 | Ryan Clark | KO | 1 (4) | 2011-05-21 | O2 Arena, Greenwich, London | |
| Win | 11–0 |  Sylvain Touzet | TKO | 3 (6) | 2010-06-26 | Neptune Sports Arena, Cork | |
| Win | 10–0 | Ciaran Healy | PTS | 10 | 2009-12-14 | Neptune Sports Arena, Cork | Won vacant Irish Middleweight Title. |
| Win | 9–0 |  Arturs Jaskuls | PTS | 6 | 2009-07-25 | National Basketball Arena, Dublin | |
| Win | 8–0 |  Marcin Piatkowski | KO | 1 (6) | 2009-04-25 | Silver Springs Moran Hotel, Cork | |
| Win | 7–0 | Jimmy LeBlanc | DQ | 4 (8) | 2009-03-14 | Dorchester Armory, Dorchester, Massachusetts | |
| Win | 6–0 |  Idiozan Matos | TKO | 3 (6) | 2008-10-26 | Gleneagle Hotel, Killarney | |
| Win | 5–0 | Sergejs Volodins | RTD | 1 (6) | 2008-09-13 | Neptune Sports Arena, Cork | |
| Win | 4–0 |  Eugen Stan | PTS | 6 | 2008-07-05 | National Basketball Arena, Dublin | |
| Win | 3–0 | Tye Williams | TKO | 1 (4) | 2008-04-15 | National Stadium, Dublin | |
| Win | 2–0 | Robert Harris | TKO | 1 (4) | 2008-03-15 | Orpheum Theater, Boston, Massachusetts | |
| Win | 1–0 | Peter Dunn | TKO | 6 (6) | 2008-01-26 | Neptune Sports Arena, Cork | Professional debut. |
Filmography
- Strength and Honour (2007, stunts)
- The Last Round (2012, short film, as Opponent)
- The Vein Within (2013, as Steven Murphy)