Singles
2004 Dutch Open
Champion	Martin Verkerk
Runner-up	Fernando González
Score	7–6(7–5), 4–6, 6–4

Nicolás Massú was the defending champion, but lost in the semifinals this year.

Martin Verkerk won the tournament, beating Fernando González in the final, 7–6^(7–5), 4–6, 6–4.

Seeds

Draw

Finals

	Semifinals							Final
	1	Nicolás Massú	3	77	3
	4	Martin Verkerk	6	64	6
								4	Martin Verkerk	77	4	6
								2	Fernando González	65	6	4
		Dennis van Scheppingen	65	4
	2	Fernando González	77	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	N Massú	6	6
		K Vliegen	3	4				1	N Massú	6	77
		R Sluiter	6	6					R Sluiter	4	64
		N Thomann	1	3											1	N Massú	6	6
		O Rochus	3	62												T Behrend	2	3
		A Portas	6	77					A Portas	2	7	2
		T Behrend	6	6					T Behrend	6	5	6
	8	A Montañés	3	0																		1	N Massú	3	77	3
	4	M Verkerk	6	3	6																	4	M Verkerk	6	64	6
	WC	M van Gemerden	4	6	1			4	M Verkerk	65	77	6
		M Rosset	5	1					A García	77	64	2
		A García	7	6											4	M Verkerk	1	77	6
	WC	P Wessels	6	3	3										5	D Sánchez	6	62	4
		J-R Lisnard	2	6	6				J-R Lisnard	2	6	3
	Q	M Przysiężny	4	4				5	D Sánchez	6	3	6
	5	D Sánchez	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	A Martín	6	6
	WC	Nick van der Meer	0	4				7	A Martín	6	4	78
	Q	P Luczak	6	4	6			Q	P Luczak	4	6	66
		J van Lottum	4	6	2										7	A Martín	4	2
	Q	J Vaněk	3	6	4											D van Scheppingen	6	6
		D van Scheppingen	6	2	6				D van Scheppingen	6	6
	Q	A Falla	6	6				Q	A Falla	2	0
	3	L Horna	2	1																			D van Scheppingen	65	4
	6	I Andreev	6	6																		2	F González	77	6
		R Ramírez Hidalgo	2	2				6	I Andreev	4	6	6
		C Rochus	7	6					C Rochus	6	2	1
		F Saretta	5	3											6	I Andreev	3	5
		Ó Hernández	6	6											2	F González	6	7
		O Mutis	1	3					Ó Hernández	5	3
		J Acasuso	6	4	1			2	F González	7	6
	2	F González	4	6	6

References

• Main Draw
• Qualifying Draw