Sjeng Schalken was the defending champion and won in the final 6–3, 6–4 against Arnaud Clément.

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.

	First round							Second round							Quarterfinals							Semifinals							Final
	WC/1	J Novák	6	6
		J Melzer	1	3				WC/1	J Novák	6	6
		O Mutis	6	77					O Mutis	2	4
		R Krajicek	4	64											WC/1	J Novák	4	4
		J Vacek	77	6												J Vacek	6	6
		A Dupuis	62	3					J Vacek	6	3	6
	Q	P Petzschner	2	7	3			5	S Grosjean	4	6	2
	5	S Grosjean	6	5	6																		J Vacek	3	4
	4	M Verkerk	6	4	611																	7	A Clément	6	6
		L Burgsmüller	3	6	713				L Burgsmüller	6	4	4
		F Vicente	0	712	6				F Vicente	4	6	6
		D Sanguinetti	6	610	2											F Vicente	6	3	0
	WC	D v Scheppingen	3	6	6										7	A Clément	4	6	6
		F López	6	4	3			WC	D van Scheppingen	64	77	3
	WC	F Hemmes Jr.	2	3				7	A Clément	77	65	6
	7	A Clément	6	6																									7	Arnaud Clément	3	4
	6	T Robredo	5	77	6																								3	Sjeng Schalken	6	6
	LL	F Moser	7	61	2			6	T Robredo	6	2	6
		K Carlsen	6	6					K Carlsen	4	6	3
	Q	Y Allegro	4	3											6	T Robredo	5	4
		M Ančić	2	3											3	S Schalken	7	6
		C Rochus	6	6					C Rochus	0	0
		A Portas	2	2				3	S Schalken	6	6
	3	S Schalken	6	6																		3	S Schalken	6	6
	8	J Acasuso	3	2																			R Sluiter	3	4
		J van Lottum	6	6					J van Lottum	6	6
	Q	F Čermák	6					Q	F Čermák	4	3
		N Kiefer	3	r												J van Lottum	4	5
		K Beck	3	5												R Sluiter	6	7
		R Sluiter	6	7					R Sluiter	7	6
	Q	P Logtens	4	6	4			2	P Srichaphan	5	4
	2	P Srichaphan	6	4	6

• 2003 Ordina Open Draw
• 2003 Ordina Open Qualifying Draw