Singles
1990 Dutch Open
Champion	Francisco Clavet
Runner-up	Eduardo Masso
Score	3–6, 6–4, 6–2, 6–0
Draw	32 (2WC / 4Q)
Seeds	8

Karel Nováček was the defending champion, but lost in the first round this year.

Francisco Clavet won the tournament, beating Eduardo Masso in the final, 3–6, 6–4, 6–2, 6–0.

Seeds

Draw

Finals

	Semifinals							Final
	1	Emilio Sánchez	4	5
	Q	Eduardo Masso	6	7
								Q	Eduardo Masso	6	4	2	0
								LL	Francisco Clavet	3	6	6	6
		Omar Camporese	6	63	63
	LL	Francisco Clavet	4	77	77

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	E Sánchez	6	5	6
	WC	T Nijssen	3	7	4			1	E Sánchez	4	7	6
	WC	J Yzaga	6	6	2				W Masur	6	6	4
		W Masur	7	4	6										1	E Sánchez	6	77
	Q	O Delaître	6	6											Q	O Delaître	2	61
		J Arrese	1	0				Q	O Delaître	3	6	6
		J Sánchez	7	4	7				J Sánchez	6	4	4
	7	H Skoff	6	6	6																	1	E Sánchez	4	5
	3	J Aguilera	6	7																		Q	E Masso	6	7
		M Vajda	4	5				3	J Aguilera	3	6	2
		G Prpić	5	3				Q	E Masso	6	3	6
	Q	E Masso	7	6											Q	E Masso	4	7	6
	Q	S Casal	6	5	6											S Bruguera	6	5	0
		D Pérez	1	7	2			Q	S Casal	1	3
		S Bruguera	6	6					S Bruguera	6	6
	6	C-U Steeb	3	1

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	M Rosset	2	1r
	Q	C Costa	6	3				Q	C Costa	6	6	1
		F Davín	3	1					R Agénor	7	3	6
		R Agénor	6	6												R Agénor	5	62
		F Santoro	3	5												O Camporese	7	77
		O Camporese	6	7					O Camporese	6	6	7
		M Filippini	6	6					M Filippini	7	1	6
	4	G Pérez Roldán	3	4																			O Camporese	6	63	63
	8	K Nováček	6	6																		LL	F Clavet	4	77	77
	LL	F Clavet	7	7				LL	F Clavet	7	6
		P Haarhuis	6	6					P Haarhuis	5	2
		A Mancini	2	2											LL	F Clavet	5	6	6
		T Carbonell	7	3	6										2	M Jaite	7	1	2
		R Azar	6	6	3				T Carbonell	6	5	4
		M Koevermans	6	1	3			2	M Jaite	4	7	6
	2	M Jaite	1	6	6

External links

• ATP main draw