Sheehan's club career with Éire Óg lasted for over twenty years and spanned three decades.
Sheehan made his first appearance for the Cork senior hurling team during the 1965 Munster Championship, having earlier played for the county in the minor, junior and intermediate grades.
In 1960, he was barely out of the minor ranks when he captured a Mid-Cork junior championship title following an eight-point win over Ballincollig.
[2] It was the first of three divisional titles in-a-row for Sheehan and Éire Óg as Cloughduv and Ballincollig were subsequently defeated in the finals of 1961 and 1962.
[citation needed] In 1963 Sheehan was back playing inter-county with Cork, this time as a member of the intermediate team.
[citation needed] Sheehan made his senior championship debut for Cork on 4 July 1965 in a 2-6 apiece Munster semi-final draw with Waterford.
[citation needed] Partial Reference: Cork GAA website Inter-County SHC Results and Teams.