At inter-county level, O'Shea first played for the Cork senior hurling team on 9 August 1903 in what was the delayed 1902 championship. After missing Cork's Munster Championship triumph, he later won an All-Ireland Championship medal after a 3-13 to no score defeat of London at the Cork Athletic Grounds. O'Shea later lined with Cork on a number of occasions before playing his last game on 29 August 1909.
O'Shea died in a drowning accident at Lough Carrig Bay in Cork Harbour on 14 August 1911.[1]