He scored three points from full-forward but ended the game on the losing side after suffering a 1-13 to 2-09 defeat by Presentation College from Athenry.

On 2 March 2013, he lined out at left wing-forward when Mary I faced University College Cork in the Fitzgibbon Cup final.

[1] Cooney joined the St Thomas' club at a young age and played in all grades at juvenile and underage levels.

On 2 November 2008, he was at left corner-forward when St Thomas' faced Athenry in the Galway Minor A Championship final.

He made his first appearance for the team on 25 July 2009 when he came on as a substitute at midfield for James Regan and scored a point in a 4–23 to 0–10 defeat of Antrim.

[7] On 6 September 2009, Cooney won an All-Ireland Championship medal as a non-playing substitute when Galway defeated Kilkenny by 2–15 to 2–11 in the final.

[11] Cooney played his last game in the under-21 grade on 24 August 2013 when he scored a point from centre-forward in a 1–16 to 0–7 defeat by Clare in the All-Ireland semi-final.

[16] Cooney again failed to make the starting fifteen for the replay on 30 September 2012 but was introduced as a substitute for Niall Burke in the 3-22 to 3-11 defeat.

[17] On 7 July 2013, Cooney scored two points from centre-forward for Galway when they suffered a 2-25 to 2-13 defeat by Dublin in the Leinster final.

[18] Cooney's 2015 season was hampered by a series of injuries, however, he was included on the team for the All-Ireland final against Kilkenny on 6 September 2015.

[20] On 22 April 2017, Cooney was a non-playing substitute when Galway won the National League title after a 3-21 to 0-14 victory over Tipperary in the final.

[25] On 1 July 2018, Cooney scored a point from play in Galway's 0-18 apiece draw with Kilkenny in the Leinster final.