|Full name||Celaleddin Koçak|
|Date of birth||24 November 1977|
|Place of birth||West Berlin, West Germany|
|Height||1.78 m (5 ft 10 in)|
|1993–1997||Tennis Borussia Berlin|
|1997–1999||Tennis Borussia Berlin||51||(1)|
|* Senior club appearances and goals counted for the domestic league only|
He began his career at Tennis Borussia Berlin but found little success there. Like many young footballers born to Turkish immigrant parents in Germany, he tried his chances by joining a Turkish team. In December 1999, he decided to join Altay S.K. of İzmir. Six months later he had been impressive enough to earn a place at Süper Lig side MKE Ankaragücü. He stayed there for two years, joining Diyarbakırspor in 2002. Here he helped the newly promoted side to remain in the top division.
In summer 2003, Koçak joined Malatyaspor and it was here that he really made a name for himself. As well as helping Malatyaspor to a mid table place, he was particularly impressive in their performances in the UEFA Cup.
The next year, he joined Ziya Doğan, who had brought him to Malatyaspor a year earlier, at Trabzonspor. Again, he established himself in the team from the beginning and became a regular as Trabzonspor finished as runners up in the league.
Koçak in a left sided player who can alternate between defence and midfield. At Trabzonspor, he was used primarily in defence. His abilities lie in his power and speed which help him to make forward runs as well as defending effectively.
- "Celaleddin Kocak". worldfootball.net. Retrieved 11 March 2012.
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