|Date of birth||6 April 1971|
|Place of birth||Dublin, Ireland|
|Height||1.79 m (5 ft 10 in)|
|* Senior club appearances and goals counted for the domestic league only|
He made his debut on 9 August 1989 against St James's Gate F.C. in the Leinster Senior Cup. Tracey made his League of Ireland debut on 19 November 1989 against Dundalk as a substitute. He got his first start following week in Cork. His first goal was against University College Dublin A.F.C. in a 1-0 win on the 13 February 1990. He was the club's top goalscorer in 1994–95 with 8 league goals.
Derek made his 250th league appearance in a great 3-1 win over Bohemians on 19 September 1999.
On the 26 May 2006, Tracey announced his retirement. During his time he made almost 500 senior appearances and as a versatile midfielder played in every position except goalkeeper. He played under 11 managers and scored once in 3 appearances in Europe 
Derek scored 47 goals in 486 competitive appearances for The Hoops.