Teehan joined the team during the 2001 National League and immediately became a regular member of the starting fifteen. During his inter-county playing days Offaly enjoyed little success and, apart from a National League (Division 2) winners' title, the Offaly team failed to land any honours in the championship. Teehan retired from inter-county hurling prior to the 2008 championship.
^"Offaly role for Tipp great Maher". Hogan Stand. 5 October 2022. It was already confirmed that Coolderry's Barry Teehan would be continuing as a selector, while 2017 Galway All-Ireland winning goalkeeper Colm Callanan is also remaining on board as a goalkeeping coach.