Men's singles
2003 Estoril Open
Champion	Nikolay Davydenko
Runner-up	Agustín Calleri
Score	6–4, 6–3
Draw	32
Seeds	8

David Nalbandian was the defending champion but did not compete that year.

Nikolay Davydenko won in the final 6–4, 6–3 against Agustín Calleri.

Seeds

Draw

Finals

	Semifinals							Final
	5	Tommy Robredo	4	2
		Agustín Calleri	6	6
									Agustín Calleri	4	3
									Nikolay Davydenko	6	6
		Nikolay Davydenko	6	3	6
	7	Max Mirnyi	4	6	3

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Novák	77	4	5
		J van Lottum	65	6	7				J van Lottum	1	3
	Q	F Verdasco	63	6	4			LL	G Blanco	6	6
	LL	G Blanco	77	1	6										LL	G Blanco	2	3
	Q	H Levy	6	77											5	T Robredo	6	6
		M Verkerk	3	64				Q	H Levy	3	1
		A Gaudenzi	3	1				5	T Robredo	6	6
	5	T Robredo	6	6																		5	T Robredo	4	2
	4	F González	6	4	6																		A Calleri	6	6
		D Ferrer	2	6	4			4	F González	6	6
		J Acasuso	6	6					J Acasuso	1	3
		D Sánchez	3	4											4	F González	5	1
		A Calleri	6	6												A Calleri	7	6
	WC	D Rocha	1	0					A Calleri	6	6
	WC	H Lopes	6	1	1			8	J Nieminen	3	4
	8	J Nieminen	4	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	N Davydenko	6	6
		I Labadze	1	0				6	Y Kafelnikov	6	6
		W Arthurs	6	5	61				A Voinea	3	0
		A Voinea	3	7	77										6	Y Kafelnikov	2	4
		A Waske	6	5	6											N Davydenko	6	6
	LL	G Etlis	2	7	4				A Waske	3	63
		N Davydenko	6	6					N Davydenko	6	77
	3	S Schalken	3	2																			N Davydenko	6	3	6
	7	M Mirnyi	6	4	7																	7	M Mirnyi	4	6	3
		A Martín	0	6	5			7	M Mirnyi	3	6	6
	Q	V Hănescu	6	6				Q	V Hănescu	6	3	4
	Q	C Rochus	3	2											7	M Mirnyi	77	6
		R Sluiter	61	6	63											F López	60	4
	WC	B Mota	77	3	77			WC	B Mota	3	4
		F López	6	4	7				F López	6	6
	2	R Schüttler	1	6	5

External links

• 2003 Estoril Open draw