Ray Treacy Rovers fans when his penalty against Sligo helped win the FAI Cup in 1978. Treacy almost scored a hat trick for the Republic of Ireland national football team against Turkey in April 1978. The two goals he scored (along with the game's opening goal by Johnny Giles) represent the last occasion that a home-based player has scored for the senior Irish national team until 40 years later when in June 2018, Graham Burke, also a Shamrock Rovers player, scored against the United States. Treacy represented the League of Ireland in a friendly against Argentina in the Boca Junior Stadium in
Keith Treacy player in the first team squad under managers Eddie Howe and Sean Dyche. In effort to boost chance to make to the Ireland Squad for UEFA Euro 2012, Treacy joined Sheffield Wednesday on loan until the end of the season. Treacy made his Sheffield Wednesday debut two days later, coming on as a substitute for Jermaine Johnson in the 78th minute, in a 1-0 win over Leyton Orient. After making appearance, mostly from coming on the bench, Treacy scored his first Sheffield Wednesday goal, coming from a direct free kick and provided a winning goal, in a 2-1 win over