Diarmuid O'Sullivan
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Diarmuid O'Sullivan (born 27 July 1978) is an Irish hurling coach and hurler who plays for Cork Premier Championship club
Cloyne Cloyne () is a small town to the southeast of Midleton in eastern County Cork. It is also a see city of the Anglican (Church of Ireland) Diocese of Cork, Cloyne and Ross, while also giving its name to a Roman Catholic diocese. St Colman's Ca ...
. He played for the
Cork senior hurling team The Cork county hurling team represents Cork in hurling and is governed by Cork GAA, the county board of the Gaelic Athletic Association. The team competes in the three major annual inter-county competitions; the All-Ireland Senior Hurlin ...
for 12 years, during which time he usually lined out as a full-back. A fan favourite who was noted for his swashbuckling style during his inter-county career, O'Sullivan is considered a "Cork legend". O'Sullivan began his hurling career at club level with Cloyne, for whom his father Jerry O'Sullivan, had also played. He broke onto the club's top adult team as a 16-year-old in 1995 and enjoyed his greatest success two years later when the club won the 1997 Cork Intermediate Championship title and promotion. O'Sullivan has made 90 championship appearances in three different grades of hurling for the club, while his early prowess also saw him selected for the
Imokilly Imokilly ( ga, Uí Mhic Coille) is one of the baronies of Ireland, an historical geographical unit of land. Its chief town is Youghal. It is one of 24 baronies in the county of Cork. Other neighbouring baronies include Barrymore to the west (wh ...
divisional team with whom he won the 1997 Cork Senior Championship. At inter-county level, O'Sullivan was part of the successful Cork under-21 team that won back-to-back All-Ireland Championships in
1997 File:1997 Events Collage.png, From left, clockwise: The movie set of ''Titanic'', the highest-grossing movie in history at the time; '' Harry Potter and the Philosopher's Stone'', is published; Comet Hale-Bopp passes by Earth and becomes one of ...
and
1998 1998 was designated as the ''International Year of the Ocean''. Events January * January 6 – The ''Lunar Prospector'' spacecraft is launched into orbit around the Moon, and later finds evidence for frozen water, in soil in permanently s ...
. He joined the Cork senior team in
1997 File:1997 Events Collage.png, From left, clockwise: The movie set of ''Titanic'', the highest-grossing movie in history at the time; '' Harry Potter and the Philosopher's Stone'', is published; Comet Hale-Bopp passes by Earth and becomes one of ...
. From his debut, O'Sullivan was ever-present as a defender and made a combined total of 110 National League and Championship appearances in a career that ended with his last game in
2008 File:2008 Events Collage.png, From left, clockwise: Lehman Brothers went bankrupt following the Subprime mortgage crisis; Cyclone Nargis killed more than 138,000 in Myanmar; A scene from the opening ceremony of the 2008 Summer Olympics in Beijing; ...
. During that time he was part of three All-Ireland Championship-winning teams – in
1999 File:1999 Events Collage.png, From left, clockwise: The funeral procession of King Hussein of Jordan in Amman; the 1999 İzmit earthquake kills over 17,000 people in Turkey; the Columbine High School massacre, one of the first major school shoot ...
, 2004 and 2005. O'Sullivan also secured five
Munster Championship The Munster GAA Hurling Senior Championship, known simply as the Munster Championship, is an annual inter-county hurling competition organised by the Munster Council of the Gaelic Athletic Association (GAA). It is the highest inter-county hurlin ...
medals and a National Hurling League medal as captain of the team. As a
dual player Dual player or dual star is a term used in Hiberno-English to describe someone who competes in multiple sports — for example, in Victorian Ireland, cricket and hurling. The term today in Gaelic games typically describes a male player who plays ...
at the highest level, he won a
Munster Championship The Munster GAA Hurling Senior Championship, known simply as the Munster Championship, is an annual inter-county hurling competition organised by the Munster Council of the Gaelic Athletic Association (GAA). It is the highest inter-county hurlin ...
medal with the
Cork senior football team The Cork county football team represents Cork in men's Gaelic football and is governed by Cork GAA, the county board of the Gaelic Athletic Association. The team competes in the three major annual inter-county competitions; the All-Ireland ...
in 2002. O'Sullivan announced his retirement from inter-county hurling on 12 May 2009, instead opting to transition to rugby, where he had stints with Cork clubs Highfield and
Midleton Midleton (; , meaning "monastery at the weir") is a town in south-eastern County Cork, Ireland. It lies approximately 16 km east of Cork City on the Owenacurra River and the N25 road, which connects Cork to the port of Rosslare. A satellit ...
. O'Sullivan was named Young Hurler of the Year in 1999 while he also won his first All-Star that year. He claimed a further three All-Stars in
2000 File:2000 Events Collage.png, From left, clockwise: Protests against Bush v. Gore after the 2000 United States presidential election; Heads of state meet for the Millennium Summit; The International Space Station in its infant form as seen from S ...
, 2004 and 2005. At inter-provincial level, O'Sullivan was selected to play in five championship campaigns with Munster, with his sole Railway Cup medal being won in
2000 File:2000 Events Collage.png, From left, clockwise: Protests against Bush v. Gore after the 2000 United States presidential election; Heads of state meet for the Millennium Summit; The International Space Station in its infant form as seen from S ...
.


Early life

O'Sullivan was born in Cork and raised in
Cloyne Cloyne () is a small town to the southeast of Midleton in eastern County Cork. It is also a see city of the Anglican (Church of Ireland) Diocese of Cork, Cloyne and Ross, while also giving its name to a Roman Catholic diocese. St Colman's Ca ...
in
East Cork East Cork lies in south-west Ireland, in Ireland's largest county, County Cork. The term "East Cork" is used in tourism, sporting and other contexts, and is the name given to one of eight municipal districts of Cork County Council. East Cork con ...
. His father, Jerry O'Sullivan, played with the Cloyne club from the 1960s until the 1990s before later serving as an administrator with the Cork County Board and the Munster Council. O'Sullivan's brother, Paudie, has also been a member of the Cork senior hurling team.


Playing career


Midleton CBS

During his secondary schooling at
Midleton CBS Secondary School Midleton CBS Secondary School is a Catholic secondary school for boys, located in Midleton, County Cork, Ireland. Midleton CBS was founded by the Congregation of Christian Brothers in 1867. History The Christian Brothers arrived in Midleton in ...
, O'Sullivan was more renowned as a Gaelic footballer before joining the college's senior hurling team. On 26 March 1995, he was at right wing-forward on the Midleton CBS team that defeated Lismore CBS by 3-18 to 3-05 to win the Harty Cup title. O'Sullivan lined out on the Midleton CBS senior hurling team for a further two years. He later said: "I found Harty hurling much tougher than minor inter-county. The games were of an intensity that I had never previously encountered. You became aware very quickly of the standard required to compete and you had to adapt to the various styles played by schools from the different counties. It toughened me up a fair bit and stood to me in my later career with Cork."


Cloyne

O'Sullivan joined the
Cloyne Cloyne () is a small town to the southeast of Midleton in eastern County Cork. It is also a see city of the Anglican (Church of Ireland) Diocese of Cork, Cloyne and Ross, while also giving its name to a Roman Catholic diocese. St Colman's Ca ...
club as a seven-year-old and played in all grades at juvenile and underage levels. Speaking of his first hurling appearance he said: "I went on not knowing what I was leaving myself in for but I knew when I came off I wanted more of it." O'Sullivan was first selected for the club's intermediate team in 1995. On 20 October 1996, O'Sullivan was at left wing-back when Cloyne drew with Newtownshandrum in the final of the Cork Intermediate Championship. He lined out in the same position a fortnight later when Cloyne were defeated in the replay by 0-12 to 0-09. O'Sullivan lined out at left wing-back in his second successive final on 2 November 1997. A 1-12 to 1-07 defeat of Delanys secured the title and a Cork Intermediate Championship medal for O'Sullivan. On 31 October 2004, O'Sullivan was at right wing-back when Cloyne qualified to face Na Piarsaigh in the final of the Cork Senior Championship. He was switched to centre-back during the game and scored a point from as free, however, Cloyne were defeated by 0-17 to 0-10. Cloyne qualified for a second successive Cork Senior Championship final with Newtownshandrum providing the opposition on 16 October 2005. O'Sullivan lined out at centre-back in the 0-15 to 0-09 defeat. O'Sullivan was appointed captain of the Cloyne team for the 2006 championship, while he also took up a new position at centre-forward. On 22 October 2006, he captained the team when they were defeated by 2-19 to 3-14 by Erin's Own in the Cork Senior Hurling Championship final.


Imokilly

O'Sullivan had just turned 18 when he was first selected for the
Imokilly Imokilly ( ga, Uí Mhic Coille) is one of the baronies of Ireland, an historical geographical unit of land. Its chief town is Youghal. It is one of 24 baronies in the county of Cork. Other neighbouring baronies include Barrymore to the west (wh ...
divisional team. He was a regular in the half-back line throughout the 1996 championship and was at left wing-back when Imokilly drew with Avondhu in the final on 22 September 1996. A fortnight later he was selected in the same position for the replay which Imokilly lost by 0-13 to 1-08. O'Sullivan was again selected at left wing-back the following year. On 5 October 1997, he won a Cork Senior Championship medal after a 1-18 to 2-12 defeat of Sarsfields in the final.


Cork


Minor and under-21

In spite of Harty Cup success as well as being added to the Cloyne intermediate team, O'Sullivan was disappointed not to be selected for the Cork minor team in 1995. He later said: "I was overlooked...it was a fair kick. I was disappointed. I suppose when you look back there's always some bit of politics. Somebody looking after their own." O'Sullivan was called up to the minor panel the following year, making his only appearance on 26 June 1996 in a 0-16 to 1-09 defeat by
Tipperary Tipperary is the name of: Places *County Tipperary, a county in Ireland **North Tipperary, a former administrative county based in Nenagh **South Tipperary, a former administrative county based in Clonmel *Tipperary (town), County Tipperary's na ...
in the
Munster Minor Hurling Championship The Munster GAA Hurling Minor Championship (known for sponsorship reasons as the Electric Ireland Munster GAA Hurling Minor Championship) is an annual inter-county hurling competition organised by the Munster Council of the Gaelic Athletic Assoc ...
. O'Sullivan subsequently progressed onto the Cork under-21 team and won a
Munster Championship The Munster GAA Hurling Senior Championship, known simply as the Munster Championship, is an annual inter-county hurling competition organised by the Munster Council of the Gaelic Athletic Association (GAA). It is the highest inter-county hurlin ...
medal at full-back on 30 July 1997 following a 1-11 to 0-13 defeat of Tipperary. He was at full-back again for the subsequent 3-11 to 0-13
All-Ireland final The All-Ireland Final may refer to: * All-Ireland Hurling Final, the last match to be played in the All-Ireland Hurling Championship (Senior, Minor and Under-21 levels) * The last match to be played in the All-Ireland Senior Football Championship ...
defeat of
Galway Galway ( ; ga, Gaillimh, ) is a city in the West of Ireland, in the province of Connacht, which is the county town of County Galway. It lies on the River Corrib between Lough Corrib and Galway Bay, and is the sixth most populous city on ...
on 21 October. On 23 August 1998, O'Sullivan won a second successive Munster Championship medal after a 3-18 to 1-10 defeat of Tipperary in the final. He later won a second successive All-Ireland Championship medal at full-back on 20 September after a 2-15 to 2-10 defeat of Galway.


Senior

O'Sullivan was just eighteen-years-old when he made his first appearance for the Cork senior team on 23 March 1997. He was selected at left corner-back for the 4-21 to 2-11 defeat of Antrim in the National Hurling League. O'Sullivan was later selected at left corner-back for Cork's 12-19 to 0-18
Munster Championship The Munster GAA Hurling Senior Championship, known simply as the Munster Championship, is an annual inter-county hurling competition organised by the Munster Council of the Gaelic Athletic Association (GAA). It is the highest inter-county hurlin ...
defeat by Clare on 8 June. At the end of the season he was regarded as unlucky not to have been nominated for an All-Star. O'Sullivan was appointed captain of the Cork senior team for the 1998 season. On 17 May 1998, he captained the team to the National League title following a 2-14 to 0-13 defeat of
Waterford "Waterford remains the untaken city" , mapsize = 220px , pushpin_map = Ireland#Europe , pushpin_map_caption = Location within Ireland##Location within Europe , pushpin_relief = 1 , coordinates ...
in the final. In 1999 O'Sullivan was switched to the full-back position for the championship. On 4 July, he won his first Munster Championship medal after a 1-15 to 0-14 defeat of reigning champions Clare. On 11 September, O'Sullivan was at full-back for the
All-Ireland final The All-Ireland Final may refer to: * All-Ireland Hurling Final, the last match to be played in the All-Ireland Hurling Championship (Senior, Minor and Under-21 levels) * The last match to be played in the All-Ireland Senior Football Championship ...
against Kilkenny which Cork won by 0-12 to 0-11. He was later honoured with his first All-Star award, while he was also named as the Young Hurler of the Year. On 3 July 2000, O'Sullivan lined out in his second Munster final. He was described as "majestic" at full-back and was instrumental in saving a
Tommy Dunne Tomás Dunne (born 21 May 1974) is an Irish hurling coach and former player who is from Toomevara, County Tipperary in Ireland. He is the current coach of the Tipperary senior hurling team. Dunne enjoyed a distinguished playing career with To ...
penalty in the 0-23 to 3-12 defeat of Tipperary. O'Sullivan ended the year with a second successive All-Star. On 5 May 2002, O'Sullivan scored a 65-metre free in Cork's 2-15 to 2-14 defeat by Kilkenny in the National League final. Later that season he became a
dual player Dual player or dual star is a term used in Hiberno-English to describe someone who competes in multiple sports — for example, in Victorian Ireland, cricket and hurling. The term today in Gaelic games typically describes a male player who plays ...
when he was selected for the Cork Gaelic football team. He made his first appearance at right corner-forward on 16 June in an 0-08 apiece draw with
Kerry Kerry or Kerri may refer to: * Kerry (name), a given name and surname of Gaelic origin (including a list of people with the name) Places * Kerry, Queensland, Australia * County Kerry, Ireland ** Kerry Airport, an international airport in Count ...
in the
Munster Championship The Munster GAA Hurling Senior Championship, known simply as the Munster Championship, is an annual inter-county hurling competition organised by the Munster Council of the Gaelic Athletic Association (GAA). It is the highest inter-county hurlin ...
. O'Sullivan won a Munster Championship medal on 21 July after being introduced as a substitute in Cork's 1-23 to 0-07 defeat of Tipperary in the final replay. On 29 November, O'Sullivan and six of his teammates from the Cork hurling panel held a press conference at the Imperial Hotel to announce that all 30 members of the panel were withdrawing their services from the county in the hope of better treatment from the county board. He remained a high-profile representative at the negotiations over the following two weeks and was one of five Cork senior football representatives who agreed to a settlement with the county board on 13 December. O'Sullivan lined out in his third Munster final on 29 June 2003. As full-back he marked
John Mullane John Mullane (born 28 January 1981) is an Irish hurler who played as a right corner-forward for the Waterford senior team. Mullane joined the team during the 2001 championship and immediately became a regular member of the starting fifteen. ...
but was substituted with Mark Prendergast after fifteen minutes. Cork won the game by 3-16 to 3-12 with O'Sullivan winning his third Munster Championship medal. On 14 September, he was at full-back for Cork's 1-14 to 1-11
All-Ireland final The All-Ireland Final may refer to: * All-Ireland Hurling Final, the last match to be played in the All-Ireland Hurling Championship (Senior, Minor and Under-21 levels) * The last match to be played in the All-Ireland Senior Football Championship ...
defeat by Kilkenny. O'Sullivan ended the season by being nominated for an All-Star, but lost out to Kilkenny's
Noel Hickey Noel Leonard Hickey (born 22 December 1980) is an Irish hurler who played as a full-back at senior level for the Kilkenny county team. Born in Danganmore near Dunnamaggin, County Kilkenny, Hickey first played competitive hurling whilst at ...
for the full-back berth. On 27 June 2004, O'Sullivan lost his first Munster final when Waterford defeated Cork by 3-16 to 1-21. In spite of this defeat, Cork later qualified for the
All-Ireland final The All-Ireland Final may refer to: * All-Ireland Hurling Final, the last match to be played in the All-Ireland Hurling Championship (Senior, Minor and Under-21 levels) * The last match to be played in the All-Ireland Senior Football Championship ...
against Kilkenny. A 0-17 to 0-09 victory gave O'Sullivan a second All-Ireland medal. He ended the season by being named in the full-back position on the All-Stars team. O'Sullivan won his fourth Munster Championship medal on 26 June 2005 after a 1-21 to 1-16 defeat of Tipperary in the final at Páirc Uí Chaoimh. On 11 September 2005, Cork faced
Galway Galway ( ; ga, Gaillimh, ) is a city in the West of Ireland, in the province of Connacht, which is the county town of County Galway. It lies on the River Corrib between Lough Corrib and Galway Bay, and is the sixth most populous city on ...
in the
All-Ireland final The All-Ireland Final may refer to: * All-Ireland Hurling Final, the last match to be played in the All-Ireland Hurling Championship (Senior, Minor and Under-21 levels) * The last match to be played in the All-Ireland Senior Football Championship ...
for the first time since
1990 File:1990 Events Collage.png, From left, clockwise: The 1990 FIFA World Cup is played in Italy; The Human Genome Project is launched; Voyager I takes the famous Pale Blue Dot image- speaking on the fragility of humanity on Earth, astrophysicist ...
. O'Sullivan was in his usual position of full-back, and proved effective in nullifying the threat of
Niall Healy Niall Healy (born 14 April 1985) is an Irish sportsperson. He plays hurling with his local club Craughwell and was a member of the Galway senior inter-county team from 2005. Healy was top scorer in the 2015 galway senior hurling championship ...
who was substituted in the 56th minute. Cork won the game by 1-21 to 1-16, with O'Sullivan collecting a third All-Ireland medal. He ended the season by winning a second successive All-Star, his fourth overall, in the full-back position. On 25 June 2006, O'Sullivan won his fifth Munster Championship medal after a 2-14 to 1-14 defeat of Tipperary for the second consecutive year. Cork subsequently qualified for a fourth successive
All-Ireland final The All-Ireland Final may refer to: * All-Ireland Hurling Final, the last match to be played in the All-Ireland Hurling Championship (Senior, Minor and Under-21 levels) * The last match to be played in the All-Ireland Senior Football Championship ...
, with Kilkenny providing the opposition for the third time. O'Sullivan received an early yellow card for an off-the-ball incident with
Martin Comerford Martin Timothy Comerford (born 9 November 1978) is an Irish hurler who played as a centre-forward for the Kilkenny senior team. Born in London, at an early age Comerford went to St. John's Boys' National School in Ballybough Street, Kilkenny ...
, while in the 29th minute he failed to deal with a high ball which bounced out of his hand towards
Aidan Fogarty Aidan Fogarty (born 20 July 1982) is an Irish hurler who played as a left corner-forward for the Kilkenny senior team. Born in Urlingford, County Kilkenny, Fogarty first arrived on the inter-county scene at the age of twenty-one when he fir ...
and a goal was conceded. Cork eventually lost the game by 1-16 to 1-13. He ended the season by being nominated for another All-Star, but lost out to J. J. Delaney. On 27 May 2007, O'Sullivan was at the centre of what came to be known as "Semplegate". Prior to the start of the Munster Championship meeting between Cork and Clare at Semple Stadium, a number of players from both teams clashed as they emerged from the tunnel at the same time with the fighting spilling onto the pitch in front of a number of children who had formed a guard of honour. At a subsequent meeting of the GAA's Central Hearings Committee, Cork players Seán Óg Ó hAilpín, Donal Óg Cusack and O'Sullivan were served with a month-long suspension for their participation in the melee. The three players were later restored to the starting fifteen, however, Cork's championship campaign ended with an All-Ireland quarter-final replay defeat by Waterford. For the second time in six years, the Cork senior hurling team withdrew their services in sympathy with the Cork senior football team who had also refused to play due to the appointment of
Teddy Holland Timothy A. Holland (born 1948), known as Teddy Holland, is an Irish Gaelic football coach and former player. At club level he played with Ballinascarthy, Carbery and St Finbarr's and was a member of and later managed the Cork senior football t ...
as team manager and the changing of the rules regarding the selection committee. Because of this, O'Sullivan and his teammates failed to fulfil their opening two fixtures in the
2008 National Hurling League The 2008 National Hurling League, known for sponsorship reasons as the Allianz National Hurling League, was the 77th edition of the National Hurling League (NHL), an annual hurling competition for the GAA county teams. Tipperary GAA, Tipperary won ...
. He was reinstated at full-back for Cork's subsequent championship campaign, but received harsh criticism for his performances. On 10 August 2008, O'Sullivan played his last championship game for Cork in an All-Ireland semi-final defeat by Kilkenny. His "cameo of redemption" was praised, with the ''
Irish Times ''The Irish Times'' is an Irish daily broadsheet newspaper and online digital publication. It launched on 29 March 1859. The editor is Ruadhán Mac Cormaic. It is published every day except Sundays. ''The Irish Times'' is considered a newspaper ...
'' also describing O'Sullivan's performance as "his best display of the year". After the game O'Sullivan let emotions get the better of him and he was visibly distraught as he walked down the tunnel, gripping the crest on his jersey. O'Sullivan missed Cork's National League campaign in 2009 due to the players withdrawing their services for the third time in seven years. The third strike was particularly difficult for O'Sullivan as his father, Jerry, was the chairman of the Cork County Board. On 12 May 2009, O'Sullivan announced his intention not to return to the Cork senior team for the championship. He later revealed that his decision was influenced by a new rule which made the wearing of helmets compulsory. O'Sullivan also revealed that he hinted to team manager Denis Walsh about a change of position from full-back. He stated: "After the game against Kilkenny last year, I didn't feel I could play again in the full back line. I told him this and I asked him if I could play a role somewhere else on the field and he said he would think about it. Which he did and he was honest and said he didn't think there was...I took a few hours to think about it but I had made up my mind after the Kilkenny game that full back was no more for me so I just had to stick by it."


Coaching career


Cork


Under-16

O'Sullivan began his inter-county coaching career in 2014 when he was appointed manager of the Cork under-16 development team. On 29 August 2015, he guided the team to an All-Ireland title after a 3-09 to 0-15 defeat of Kilkenny in the final at Semple Stadium.


Senior

On 16 October 2015, O'Sullivan became a selector with the Cork senior team under Kieran Kingston. His first season as part of the management team saw Cork lose all five of their group stage games in the National League before narrowly avoiding relegation with a 2-22 to 0-25 defeat of Galway in a play-off. Cork's subsequent championship campaign ended with a first defeat by
Wexford Wexford () is the county town of County Wexford, Ireland. Wexford lies on the south side of Wexford Harbour, the estuary of the River Slaney near the southeastern corner of the island of Ireland. The town is linked to Dublin by the M11/N11 ...
in 60 years. O'Sullivan's second season as a selector saw Cork reach the National League quarter-finals where they faced a 1-20 to 1-18 defeat by
Limerick Limerick ( ; ga, Luimneach ) is a western city in Ireland situated within County Limerick. It is in the province of Munster and is located in the Mid-West which comprises part of the Southern Region. With a population of 94,192 at the 2016 ...
. On 9 July 2017, he was part of the management team that saw Cork win the Munster Championship after a 1-25 to 1-20 defeat of Clare in the final.


Ballygiblin

In 2018, O'Sullivan joined the management of the Ballygiblin junior team as trainer. On 1 September, Ballygiblin defeated
Shanballymore Shanballymore (, colloquially ''Shanbla'') is a small village in north County Cork, Ireland. It neighbours the towns of Doneraile, Kildorrery and Castletownroche, and is off the main route from Mallow to Mitchelstown. Shanballymore is part of ...
by 1-15 to 0-12 to win the North Cork Championship.


Career statistics


Club


Inter-county


Honours


As a player

;Midleton CBS * Dr Harty Cup (1): 1995 ;Cloyne *
Cork Intermediate Hurling Championship The Cork Intermediate A Hurling Championship (known for sponsorship reasons as the Co-Op Superstores Cork Intermediate A Hurling Championship and abbreviated to the Cork IAHC) is an annual hurling competition organised by the Cork GAA, Cork Coun ...
(1):
1997 File:1997 Events Collage.png, From left, clockwise: The movie set of ''Titanic'', the highest-grossing movie in history at the time; '' Harry Potter and the Philosopher's Stone'', is published; Comet Hale-Bopp passes by Earth and becomes one of ...
;Imokilly *
Cork Senior Hurling Championship The Cork Premier Senior Hurling Championship (known for sponsorship reasons as the Co-Op Superstores Cork Premier Senior Hurling Championship and abbreviated to the Cork PSHC) is an annual club hurling competition organised by the Cork County B ...
(1):
1997 File:1997 Events Collage.png, From left, clockwise: The movie set of ''Titanic'', the highest-grossing movie in history at the time; '' Harry Potter and the Philosopher's Stone'', is published; Comet Hale-Bopp passes by Earth and becomes one of ...
;Cork * All-Ireland Senior Hurling Championship (3):
1999 File:1999 Events Collage.png, From left, clockwise: The funeral procession of King Hussein of Jordan in Amman; the 1999 İzmit earthquake kills over 17,000 people in Turkey; the Columbine High School massacre, one of the first major school shoot ...
, 2004, 2005 * Munster Senior Hurling Championship (5):
1999 File:1999 Events Collage.png, From left, clockwise: The funeral procession of King Hussein of Jordan in Amman; the 1999 İzmit earthquake kills over 17,000 people in Turkey; the Columbine High School massacre, one of the first major school shoot ...
,
2000 File:2000 Events Collage.png, From left, clockwise: Protests against Bush v. Gore after the 2000 United States presidential election; Heads of state meet for the Millennium Summit; The International Space Station in its infant form as seen from S ...
, 2003, 2005, 2006 *
Munster Senior Football Championship The Munster Senior Football Championship, known simply as the Munster Championship and shortened to Munster SFC, is an annual inter-county Gaelic football competition organised by the Munster Council of the Gaelic Athletic Association (GAA). It ...
(1): 2002 *
Munster Junior Football Championship The Munster Junior Football Championship is a gaelic football tournament between the six counties of Munster: Cork, Kerry, Limerick, Tipperary, Clare and Waterford. It is the third-tier county teams playing off in a single-elimination tournament w ...
(1): 2001 * National Hurling League (1):
1998 1998 was designated as the ''International Year of the Ocean''. Events January * January 6 – The ''Lunar Prospector'' spacecraft is launched into orbit around the Moon, and later finds evidence for frozen water, in soil in permanently s ...
(c) *
All-Ireland Under-21 Hurling Championship The GAA Hurling Under-20 All-Ireland Championship (known for sponsorship reasons as the Bord Gáis Energy GAA Hurling Under-20 All-Ireland Championship) is an annual inter-county hurling competition organised by the Gaelic Athletic Association (G ...
(2):
1997 File:1997 Events Collage.png, From left, clockwise: The movie set of ''Titanic'', the highest-grossing movie in history at the time; '' Harry Potter and the Philosopher's Stone'', is published; Comet Hale-Bopp passes by Earth and becomes one of ...
,
1998 1998 was designated as the ''International Year of the Ocean''. Events January * January 6 – The ''Lunar Prospector'' spacecraft is launched into orbit around the Moon, and later finds evidence for frozen water, in soil in permanently s ...
*
Munster Under-21 Hurling Championship The Munster GAA Hurling Under-20 Championship, known simply as the Munster Under-20 Championship, is an annual inter-county hurling competition organised by the Munster Council of the Gaelic Athletic Association (GAA). It is the highest inter-c ...
(2):
1997 File:1997 Events Collage.png, From left, clockwise: The movie set of ''Titanic'', the highest-grossing movie in history at the time; '' Harry Potter and the Philosopher's Stone'', is published; Comet Hale-Bopp passes by Earth and becomes one of ...
,
1998 1998 was designated as the ''International Year of the Ocean''. Events January * January 6 – The ''Lunar Prospector'' spacecraft is launched into orbit around the Moon, and later finds evidence for frozen water, in soil in permanently s ...
;Munster * Railway Cup (1):
2000 File:2000 Events Collage.png, From left, clockwise: Protests against Bush v. Gore after the 2000 United States presidential election; Heads of state meet for the Millennium Summit; The International Space Station in its infant form as seen from S ...
;Individual * In May 2020, a public poll conducted by
RTÉ.ie RTÉ.ie is the brand name and home of Irish broadcaster Raidió Teilifís Éireann (RTÉ)'s online activities, located at the URL https://www.rte.ie/. The site began publishing on 26 May 1996. According to RTÉ, it operates on an entirely com ...
named O'Sullivan in the full-back line alongside Brians Lohan and Corcoran in a team of hurlers who had won All Stars during the era of ''
The Sunday Game ''The Sunday Game'' is RTÉ's main Gaelic games television programme. It is shown on RTÉ2 every Sunday during the Football Championship and Hurling Championship seasons. It is one of RTÉ2's longest-running shows, having been on air since 1 ...
''.


In management

;Ballygiblin *
North Cork Junior A Hurling Championship The North Cork Junior A Hurling Championship (known for sponsorship reasons as the Hibernian Hotel Junior A Hurling Championship) is an annual hurling competition organised by the Avondhu Board of the Gaelic Athletic Association since 1925 fo ...
(1): 2018 ;Cork * Munster Senior Hurling Championship (1):
2017 File:2017 Events Collage V2.png, From top left, clockwise: The War Against ISIS at the Battle of Mosul (2016-2017); aftermath of the Manchester Arena bombing; The Solar eclipse of August 21, 2017 ("Great American Eclipse"); North Korea tests a s ...
*All-Ireland Under-16 Hurling Tournament (1): 2015


References

{{DEFAULTSORT:Osullivan, Diarmuid 1978 births Living people All-Ireland Senior Hurling Championship winners Cloyne hurlers Cloyne Gaelic footballers Cork inter-county hurlers Cork inter-county Gaelic footballers Gaelic footballers who switched code Dual players Hurling managers Hurling selectors Munster inter-provincial hurlers People educated at Midleton CBS Secondary School