Cooney joined the Sarsfields club at a young age and played in all grades at juvenile and underage levels before eventually joining the club's top adult team in the Galway Senior Championship.
On 8 November 2015, he captained Sarsfields in the final against Craughwell.
Cooney scored a point from centre-forward in the 0-12 apiece draw.
He retained his position for the replay and scored a goal in the 2-10 to 0-14 victory.
Cooney joined the Sarsfields club at a young age and played in all grades at juvenile and underage levels before eventually joining the club's top adult team in the Galway Senior Championship. On 8 November 2015, he captained Sarsfields in the final against Craughwell. Cooney scored a point from centre-forward in the 0-12 apiece draw. He retained his position for the replay and scored a goal in the 2-10 to 0-14 victory.
Joseph Cooney