The first few years he played at BSC Kickers 1900 in Berlin. In the C-youth he switched to Türkiyemspor. His professional career began at Tennis Borussia Berlin , where he played in the regional league and the 2nd Bundesliga. Like so many young Turkish soccer players who grew up in Germany , Koçak moved to Turkey. In December 1999 Koçak signed a contract with Altay İzmir . After good performance at Altay, he moved to MKE Ankaragücü , his first club to play in the Süper Lig , in the summer of 2000 . Celaleddin Koçak wore the Ankaragücüs jersey for two years before moving to Diyarbakirspor in the Turkish second division in 2002 , where he played a significant role in the team's promotion to the first division.
In 2003, Koçak went to Malatyaspor . On October 15, 2003, he scored two goals in the UEFA Cup game at FC Basel. In 2004 Koçak moved with his coach Ziya Doğan to Trabzonspor , where he was runner-up in the first year. On January 12, 2008, his contract with Trabzonspor was terminated. With the end of the 2009/10 season Koçak ended his professional career with league rivals Diyarbakirspor .
For Turkey Koçak played a U21 international against Romania on February 18, 1998. On December 10, 2003 he played in an A2 international match for Turkey against Scotland. On April 30, 2003 he was in the squad of Turkey's A2 against Germany, but was not used.
|German soccer player
|DATE OF BIRTH
|November 24, 1977
|PLACE OF BIRTH
|Berlin , Germany