He played hurling with his local clubs UCC and Blackrock and was a member of the Cork senior inter-county team from 1963 until 1969.
[citation needed] After losing back-to-back Munster finals to Tipperary in 1964 and 1965, O'Halloran's Cork team returned to centre stage in 1966.
In spite of this a hat-trick of goals by Colm Sheehan gave Cork a merited 3-9 to 1-10 victory over an Eddie Keher-inspired Kilkenny.
It was a victory that made up for all the beatings that Tipp had dished out to Cork in the early part of the decade and it gave O'Halloran a second Munster winners’ medal.
[citation needed] Partial Reference: Cork GAA website Inter-County SHC Results and Teams.