In 1994 Corcoran won a Munster medal with the Cork under-21 footballers following a comfortable 2-11 to 0-4 defeat of a Larry Tompkins-coached Waterford. The All-Ireland decider saw Mayo provide the opposition. Cork got off to a great start after scoring a goal in the first minute and maintained their advantage throughout the first half. Mayo rallied after scoring a goal from a penalty in the second half and reduced their deficit to two points, however, Cork pulled away to win by 1-12 to 1-5. Corcoran once again collected an All-Ireland medal.