Zemzem played for
Göztepe for his entire fourteen-year professional career. He scored 136 goals
Turkish league goals during that time and was the
top scorer in the
1967–68 season.[2] He was also the joint top-scorer in the
1968–69 season with 17 goals but asked that
Metin Oktay receive the trophy instead.[3]
In the second leg of the
Turkish Cup final on 20 May 1970, Zemzem scored twice to help Göztepe to a 3–1 win on the night and a 4–3 win on aggregate against
Eskişehirspor.[4] On 28 June 1970, he scored in the
Turkish Super Cup as Göztepe defeated
Fenerbahçe 3–1 to secure the title.[5]
His first accomplishment came when he was the coach of
Orduspor. That year Orduspor finished fourth in the league and qualified for the UEFA Cup.
Samsunspor (1981–82) and
Diyarbakırspor (in 1985–86 season) were promoted to premier league thanks to Zemzem's coaching.
Tanju Çolak and Dobi Hasan were his students.