Career
Born in, County, Thomas Costello first excelled at hurling in his youth. He arrived on the inter-county scene at the age of seventeen when he first linked up with the minor team, before later joining the under-21 side. He made his senior debut during the 2001 league.
At club level Costello is a three-time divisional medallist with.
Throughout his career Costello made 17 championship appearances. He retired from inter-county hurling following the conclusion of the 2004 championship.