Kostas Tsartsaris spent most of his career with the Greek League team Panathinaikos, owned by the billionaire Giannakopoulos family.
200001 200102 Peristeri 2002-03 200304 200405 200506 200607 200708 200809 200910 201011 201112 201213 Panathinaikos It is owned by the billionaire Giannakopoulos family. 
