Men's singles
1998 Estoril Open
Champion	Alberto Berasategui
Runner-up	Thomas Muster
Score	3–6, 6–1, 6–3
Draw	32
Seeds	8

Àlex Corretja was the defending champion, but did not participate this year.

Alberto Berasategui won the tournament, beating Thomas Muster in the final, 3–6, 6–1, 6–3.

Seeds

Draw

Finals

	Semifinals							Final
		Karim Alami	6	2	4
	6	Thomas Muster	3	6	6
								6	Thomas Muster	6	1	3
								3	Alberto Berasategui	3	6	6
	3	Alberto Berasategui	6	6
	2	Carlos Moyá	1	1

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	F Mantilla	6	6
		J Sánchez	1	3				1	F Mantilla	6	1	78
		G Blanco	64	4					A Gaudenzi	1	6	66
		A Gaudenzi	77	6											1	F Mantilla	6	5	1
		T Nydahl	1	0r												K Alami	3	7	6
		S Doseděl	6	3					S Doseděl	4	6	610
		K Alami	6	6					K Alami	6	4	712
	7	F Clavet	4	3																			K Alami	6	2	4
	4	A Costa	79	6																		6	T Muster	3	6	6
		J Burillo	67	0				4	A Costa	6	6
		J Novák	4	6	77				J Novák	3	4
		H Arazi	6	0	63										4	A Costa	4	4
	WC	N Marques	3	0											6	T Muster	6	6
		F Meligeni	6	6					F Meligeni	5	3
		D Pescariu	5	1				6	T Muster	7	6
	6	T Muster	7	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	F Santoro	2	7	0
		J Alonso	6	5	6				J Alonso	2	4
	Q	JA Marín	6	77				Q	JA Marín	6	6
	WC	B Mota	0	65											Q	JA Marín	6	4	3
		F Dewulf	77	6											3	A Berasategui	3	6	6
		R Fromberg	64	3					F Dewulf	4	7	5
	Q	J Muñoz	4	4				3	A Berasategui	6	5	7
	3	A Berasategui	6	6																		3	A Berasategui	6	6
	8	A Portas	65	3																		2	C Moyá	1	1
		JA Viloca-Puig	77	6					JA Viloca-Puig	2	6	2
		C Costa	6	6					C Costa	6	3	6
	Q	A Martín	3	3												C Costa	63	77	2
		M-K Goellner	6	7											2	C Moyá	77	65	6
	Q	J Imaz-Ruiz	4	5					M-K Goellner	3	2
		B Ulihrach	3	6	4			2	C Moyá	6	6
	2	C Moyá	6	4	6

External links

• Main draw