Coleman first came to prominence as a hurler with Scoil Mhuire Gan Smál in Blarney. Having played hurling in every grade during his time at the school, he usually lined out at midfield on the senior team. On 16 March 2016, he scored nine points as Scoil Mhuire Gan Smál defeated Roscommon CBS by 0-17 to 2-09 to take the All-Ireland title in the third tier Cusack Cup.
Coleman joined the Blarney club at a young age and played in all grades at juvenile and underage levels. On 24 May 2015, he made his championship debut and scored three points from frees in a 2-13 to 0-15 defeat of Kilworth. Coleman has also been selected for divisional side Muskerry in the senior championship.
Cork
Minor and under-21
Coleman first played for Cork at minor level in 2015, however, his sole season in the grade ended without success with a defeat by Limerick. On 23 June 2016, Coleman made his first appearance for the Cork under-21 hurling team, scoring 1-2 in Cork's seven-point defeat by Limerick. He also played in Cork's unsuccessful championship campaign in 2017. On 4 July 2018, Coleman won a Munster medal after scoring three points in Cork's 2-23 to 1-13 defeat of Tipperary in the final. On 26 August 2018, he was at centre-back in Cork's 3-13 to 1-16 All-Ireland final defeat by Tipperary in what was his last game in the grade. Coleman was later nominated for Player of the Year.
Senior
Coleman made his senior debut for Cork on 9 July 2016, replacing Stephen McDonnell for the final two minutes of an All-Ireland Qualifier against Wexford at Páirc Uí Rinn. He made his first start in a National League defeat of Clare on 11 February 2017, before making his first championship start later that season in a Munster Championship quarter-final against Tipperary. Coleman was a regular starter for Cork's subsequent championship games, with his performance against Waterford in the semi-final earning him the GAA/GPA Player of the Month award. On 9 July 2017, he won his first Munster medal following a 1-25 to 1-20 defeat of Clare in the final. Coleman ended the season with an All-Star award. On 1 July 2018, Coleman won a second successive Munster medal following a 2-24 to 3-19 defeat of Clare in the final. He ended the season by being nominated for a second consecutive All-Star Award as well as Young Hurler of the Year.
Career statistics
University
Club
Division
Inter-county
Honours
Team
;Scoil Mhuire Gan Smál
All-Ireland Post-Primary Schools Senior C Hurling Championship : 2016