Background
O'Sullivan's brother, Diarmuid, is a three-time All-Ireland medalist with Cork, while his father, Jerry, has filled a number of important administrative roles with the Cork County Board and the Munster Council.
O'Sullivan's brother, Diarmuid, is a three-time All-Ireland medalist with Cork, while his father, Jerry, has filled a number of important administrative roles with the Cork County Board and the Munster Council.
During his secondary schooling at Midleton CBS, O'Sullivan was a key member of the senior hurling team. He won a Dr. Harty Cup medal in 2006 following a narrow 2-8 to 0-12 defeat of St. Flannan's College.
Born in , County , O'Sullivan first excelled at hurling during his schooling at Secondary School. He arrived on the inter-county scene at the age of sixteen when he first linked up with the minor team, before later joining the under-21 side. He made his senior debut during the 2007 National Hurling League.
College Club O'Sullivan plays his club hurling and Gaelic football with and has enjoyed some success. In 2004 he was just fifteen years-old when he made his debut with the club's senior team. The following three years proved difficult for as the club became the first team in over sixty years to lose three successive senior championship deciders.
In spite of these defeats O'Sullivan was regularly one of the top scorers in the championship. After capturing three successive divisional junior football championship medals between 2008 and 2010, O'Sullivan's side reached the county decider at the third attepmt. A narrow 0-10 to 0-9 defeat of White's Cross gave him a championship medal.
Inter-county retained their provincial crown in 2006, with O'Sullivan collecting a second medal following a 2-20 to 1-15 defeat of Tipperary. A subsequent stint with the under-21 team yielded little success. O'Sullivan made his senior debut for in a 1-21 to 1-14 National Hurling League defeat of Offaly on 18 February 2007.
He subsequently ruptured a cruciate ligament and was ruled out of 's championship panel. On 8 June 2008 O'Sullivan was given his first championship start, when he was named at right corner-forward in a 1-19 to 1-13 semi-final defeat by Tipperary. Two months before 's opening championship game in 2013, O'Sullivan suffered a serious leg break in a club match which ruled him out for the rest of the season.
After a fourteen-month lay-off O'Sullivan returned to inter-county action. He was introduced as a second half substitute and scored a point inside ten seconds in 's 0-28 to 0-14 quarter-final replay defeat of Waterford. O'Sullivan later made a similar cameo appearance during the provincial decider.
A personal tally of 1-1, together with a goal from Séamus Harnedy, gave a 2-24 to 0-24 victory over Limerick. It was O'Sullivan's first medal. Inter-provincial O'Sullivan also had the honour of being picked for in the inter-provincial series of games.
During his secondary schooling at Midleton CBS, O'Sullivan was a key member of the senior hurling team. O'Sullivan arrived on the inter-county scene as a member of the Cork minor team in 2005.