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 made his Stockport County debut, in a 1-1 draw against Macclesfield Town on 25 November 2006. Treacy made four appearance for the club. After ending his loan spell at Stockport County, Treacy signed a new contract with the club on 12 June 2007, keeping him until 2011. After signing a new contract with the club, Treacy made his Blackburn Rovers début in a League Cup tie against Portsmouth as a substitute and made his first start against Coventry City in the FA Cup third round in a 4–1 defeat back in 2008, before being substituted off and replaced by striker