1990 Athens Open
The 1990 ATP Athens Open was a men's tennis tournament played on outdoor clay courts in Athens in Greece that was part of the World Series of the 1990 ATP Tour. It was held from 1 October through 7 October 1990. Seventh-seeded Mark Koevermans won the singles title.
Finals
Singles
Mark Koevermans defeated Franco Davín 5–7, 6–4, 6–1- It was Koevermans' only singles title of his career.