Singles
2003 Hamburg Masters
Final
Champion	Guillermo Coria
Runner-up	Agustín Calleri
Score	6–3, 6–4, 6–4
Details
Draw	64
Seeds	16
Events
Singles Doubles
← 2002 · Hamburg Masters · 2004 →

Guillermo Coria defeated Agustín Calleri in the final, 6–3, 6–4, 6–4 to win the singles tennis title at the 2003 Hamburg European Open.

Roger Federer was the defending champion, but lost in the third round to Mark Philippoussis.

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

	Quarterfinals							Semifinals							Final
	15	Fernando González	7	3	4
	8	David Nalbandian	5	6	6
								8	David Nalbandian	4	1
									Agustín Calleri	6	6
		Agustín Calleri	7	6
		Wayne Ferreira	5	2
																Agustín Calleri	3	4	4
															12	Guillermo Coria	6	6	6
	12	Guillermo Coria	6	6
		Mark Philippoussis	2	0
								12	Guillermo Coria	6	63	6
									Gastón Gaudio	3	77	0
		Olivier Rochus	1	1
		Gastón Gaudio	6	6

	First round							Second round							Third round							Quarterfinals
	1	L Hewitt	6	4	6
	WC	M Hantschk	1	6	4			1	L Hewitt	67	6	78
		N Lapentti	4	2					A Clément	79	4	66
		A Clément	6	6											1	L Hewitt	1	6	0
	Q	A Martín	0	4											15	F González	6	3	6
		F Mantilla	6	6					F Mantilla	2	1
	LL	O Mutis	2	6	5			15	F González	6	6
	15	F González	6	2	7																	15	F González	7	3	4
	9	R Schüttler	7	6																		8	D Nalbandian	5	6	6
		D Ferrer	5	1				9	R Schüttler	6	4	6
	Q	H Armando	4	4				WC	L Burgsmüller	4	6	4
	WC	L Burgsmüller	6	6											9	R Schüttler	63	2
	Q	A Dupuis	6	6											8	D Nalbandian	77	6
		F Santoro	3	3				Q	A Dupuis	7	2	3
	LL	J-R Lisnard	3	3				8	D Nalbandian	5	6	6
	8	D Nalbandian	6	6

	First round							Second round							Third round							Quarterfinals
	4	A Roddick	6	6
		I Ljubičić	4	4				4	A Roddick	6	2	3
		A Calleri	3	77	7				A Calleri	3	6	6
		H-T Lee	6	61	5											A Calleri	6	6
		K Kučera	5	4												M Zabaleta	3	0
		M Zabaleta	7	6					M Zabaleta	3	6	6
		R Štěpánek	4	3				14	T Robredo	6	3	1
	14	T Robredo	6	6																			A Calleri	7	6
	11	G Kuerten	6	6																			W Ferreira	5	2
		J I Chela	2	4				11	G Kuerten	7	6
	Q	A Voinea	0	2					N Davydenko	5	0
		N Davydenko	6	6											11	G Kuerten	64	4
		W Ferreira	6	6												W Ferreira	77	6
	WC	A Waske	3	2					W Ferreira	6	6
		F López	6	6					F López	1	2
	7	P Srichaphan	4	3

	First round							Second round							Third round							Quarterfinals
	6	J Novák	1	4
		M Youzhny	6	6					M Youzhny	67	6	6
	LL	K Beck	6	3	6			LL	K Beck	79	4	2
		W Arthurs	4	6	3											M Youzhny	3	3
		J Nieminen	6	0	6										12	G Coria	6	6
		S Koubek	4	6	1				J Nieminen	3	4
		V Spadea	2	2				12	G Coria	6	6
	12	G Coria	6	6																		12	G Coria	6	6
	13	À Corretja	63	6	3																		M Philippoussis	2	0
		X Malisse	77	4	6				X Malisse	3	64
		R Sluiter	4	5					M Philippoussis	6	77
		M Philippoussis	6	7												M Philippoussis	6	2	6
		D Hrbatý	77	4	4										3	R Federer	3	6	3
	Q	S Sargsian	64	6	6			Q	S Sargsian	1	1
		M Mirnyi	3	3				3	R Federer	6	6
	3	R Federer	6	6

	First round							Second round							Third round							Quarterfinals
	5	A Costa	6	6
	WC	N Kiefer	4	4				5	A Costa	6	3	63
		Y El Aynaoui	67	4					O Rochus	3	6	77
		O Rochus	79	6												O Rochus	6	6
		J-M Gambill	5	4												T Henman	4	3
		T Henman	7	6					T Henman	6	3	6
	Q	F Volandri	3	4				10	S Grosjean	0	6	2
	10	S Grosjean	6	6																			O Rochus	1	1
	16	J Blake	77	1	2																		G Gaudio	6	6
		G Gaudio	63	6	6				G Gaudio	68	6	6
		M Fish	7	4	2				D Sánchez	710	3	1
		D Sánchez	5	6	6											G Gaudio	6	6
		P-H Mathieu	5	4											Q	R Nadal	2	2
	Q	R Nadal	7	6				Q	R Nadal	7	6
	Q	S Draper	3	7	3			2	C Moyá	5	4
	2	C Moyá	6	5	6

• 2003 Hamburg Masters Draw
• 2003 Hamburg Masters Qualifying Draw