Marios started playing tennis at the age of 10 (1990) and at the age of 11 he joined the National Tennis Team of Cyprus.

He joined in several National and European Tournaments. He was ranged 2-3 position until the age of 18.

Marios has the USPTR Professional Certificate since 2008. He participate in several International and European Tennis Seminars. He is working with On Court Tennis Academy since 2000 as a Head Coach.