Singles
1990 Chevrolet Classic
Champion	Martín Jaite
Runner-up	Luiz Mattar
Score	3–6, 6–4, 6–3
Draw	32 (3WC/4Q/1LL)
Seeds	8

Luiz Mattar was the defending champion, but lost in the final to Martín Jaite. The score was 3–6, 6–4, 6–3.^[1]

Seeds

Draw

Finals

	Semifinals							Final
	7	Eduardo Bengoechea	4	2
	4	Luiz Mattar	6	6
								4	Luiz Mattar	6	4	3
								2	Martín Jaite	3	6	6
	WC	Alexandre Hocevar	2	6	3
	2	Martín Jaite	6	3	6

Top half

	First Round							Second Round							Quarterfinals							Semifinals
	1	J Berger	6	6
	Q	N Aerts	4	1				1	J Berger	6	6
		M Menezes	79	1	5				G Markus	3	0
		G Markus	67	6	7										1	J Berger	5	0
		P Ballauff	2	6	6										7	E Bengoechea	7	6
		F Yunis	6	4	1				P Ballauff	4	5
	WC	J Oncins	2	4				7	E Bengoechea	6	7
	7	E Bengoechea	6	6																		7	E Bengoechea	4	2
	4	L Mattar	7	6																		4	L Mattar	6	6
		F Roese	5	3				4	L Mattar	4	711	6
		P Rebolledo	4	0				Q	H Rittersbacher	6	69	4
	Q	H Rittersbacher	6	6											4	L Mattar	6	6
		A Aramburú	2	6	6										LL	I Kley	3	2
		M Wostenholme	6	4	4				A Aramburú	3	4
	WC	J Zwetsch	6	4	4			LL	I Kley	6	6
	LL	I Kley	3	6	6

Bottom half

	First Round							Second Round							Quarterfinals							Semifinals
	6	C Motta	3	6	6
		C Saceanu	6	2	1			6	C Motta	6	6
		D Marcelino	4	0					M Nido	4	1
		M Nido	6	6											6	C Motta	4	1
	WC	A Hocevar	6	6											WC	A Hocevar	6	6
	Q	O Della	0	4				WC	A Hocevar	5	6	6
		M Tabares	77	77					M Tabares	7	0	4
	3	J Yzaga	65	64																		WC	A Hocevar	2	6	3
	8	H de la Peña	6	6																		2	M Jaite	6	3	6
		G Rivas	2	3				8	H de la Peña	64	1r
		P Vojtíšek	6	6					P Vojtíšek	77	3
		J Tarango	4	3												P Vojtíšek	5	2
	Q	J Sobel	5	6	6										2	M Jaite	7	6
		R Argüello	7	4	4			Q	J Sobel	1	2
		J Frana	63	3				2	M Jaite	6	6
	2	M Jaite	77	6

References

External links

• Official results archive (ATP)
• Official results archive (ITF)