Born in Athens, Tziortziopoulos started his career at third division side Keratsini in the 1997/98 season and his performances caught the eye of Olympiacos, who signed him in the summer of 1998. Six months later he went on loan to Iraklis to gain experience and stayed until January 2000, when he returned to Olympiacos to make his debut.
Tziortziopoulos, a native of Athens, began his professional career at Keratsini in the 1997/98 season, and his performances attracted attention from Olympiacos, who signed him in the summer of 1998. Six months later, he was loaned to Iraklis to gain experience, and remained there until January 2000, when he returned to Olympiacos for his debut.