Singles
1990 Athens Open
Champion	Mark Koevermans
Runner-up	Franco Davín
Score	5–7, 6–4, 6–1
Draw	32
Seeds	8

Ronald Agénor was the defending champion, but did not participate this year.

Mark Koevermans won the tournament, beating Franco Davín in the final, 5–7, 6–4, 6–1.

Seeds

Draw

Finals

	Semifinals							Final
		Marián Vajda	61	6	3
	5	Franco Davín	77	2	6
								5	Franco Davín	7	4	1
								7	Mark Koevermans	5	6	6
	4	Jordi Arrese	2	64
	7	Mark Koevermans	6	77

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	T Muster	7	6
		M Wostenholme	6	3				1	T Muster	6	6	3
		J Wöhrmann	2	6					M Vajda	3	7	6
		M Vajda	6	7												M Vajda	6	6
		T Carbonell	7	6												T Carbonell	3	3
	Q	MA Gorriz	6	3					T Carbonell	6	6
		D Pérez	4	4				8	H de la Peña	1	4
	8	H de la Peña	6	6																			M Vajda	61	6	3
	3	G Pérez Roldán	7	6	6																	5	F Davín	77	2	6
		C Costa	6	7	1			3	G Pérez Roldán	6	6
		J Tarango	6	4	6				J Tarango	2	3
	WC	S Casal	3	6	4										3	G Pérez Roldán	2	1
		F Luna	6	6											5	F Davín	6	6
		M Střelba	2	2					F Luna	5	3
		R Furlan	3	1				5	F Davín	7	6
	5	F Davín	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	J Sánchez	6	6	6
	Q	S Doseděl	7	2	3			6	J Sánchez	6	6
		JF Altur	3	6					L Duncan	4	0
		L Duncan	6	7											6	J Sánchez	2	3
	WC	G Kalovelonis	2	2											4	J Arrese	6	6
		J Brown	6	6					J Brown	3	6
	Q	G López	2	1				4	J Arrese	6	7
	4	J Arrese	6	6																		4	J Arrese	2	64
	7	M Koevermans	6	6																		7	M Koevermans	6	77
		J Cunha-Silva	4	2				7	M Koevermans	6	4	6
		R Azar	4	6	2			WC	A Bavelas	3	6	2
	WC	A Bavelas	6	3	6										7	M Koevermans	3	6	6
		F Clavet	2	6	6											F Roig	6	1	2
	LL	T Nydahl	6	3	2				F Clavet	2	7	4
		F Roig	6	7					F Roig	6	6	6
	2	E Sánchez	2	6

External links

• Main draw