2003 Gerry Weber Open – Singles

Singles
2003 Gerry Weber Open
Final
Champion	Roger Federer
Runner-up	Nicolas Kiefer
Score	6–1, 6–3
Details
Draw	32
Seeds	8
Events
Singles Doubles
← 2002 · Gerry Weber Open · 2004 →

Yevgeny Kafelnikov was the defending champion but lost in the first round to Karol Kučera.

Roger Federer won in the final 6–1, 6–3 against Nicolas Kiefer.^[1] This tournament marked the beginning of Federer's dominance on grass courts; he remained undefeated on the surface until the final of Wimbledon in 2008. Federer's subsequent 65-match winning streak on grass remains the longest tour-level winning streak on the surface for a male player in the Open Era.^[2] It was the first of a record ten singles titles won by Federer in Halle.^[3]

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

	Semifinals							Final
	1	Roger Federer	4	77	6
	6	Mikhail Youzhny	6	64	2
								1	Roger Federer	6	6
									Nicolas Kiefer	1	3
	8	Arnaud Clément	6	64	4
		Nicolas Kiefer	4	77	6

	First round							Second round							Quarterfinals							Semifinals
	1	R Federer	7	6
		S Sargsian	5	1				1	R Federer	4	6	6
		H-T Lee	4	0					F Vicente	6	2	1
		F Vicente	6	6											1	R Federer	7	77
		L Burgsmüller	6	5	6										5	Y El Aynaoui	5	63
	Q	J-C Scherrer	4	7	4				L Burgsmüller	3	3
	WC	C Koderisch	1	2				5	Y El Aynaoui	6	6
	5	Y El Aynaoui	6	6																		1	R Federer	4	77	6
	3	J Novák	6	6																		6	M Youzhny	6	64	2
	WC	H Dreekmann	2	4				3	J Novák	6	6
		S Koubek	6	6					S Koubek	4	3
	Q	Y Allegro	4	3											3	J Novák	4	4
	WC	M Abel	3	4											6	M Youzhny	6	6
		J Björkman	6	6					J Björkman	4	5
		P-H Mathieu	6	1	2r			6	M Youzhny	6	7
	6	M Youzhny	1	6	5

	First round							Second round							Quarterfinals							Semifinals
	8	A Clément	6	6
	Q	F Niemeyer	3	0				8	A Clément	6	6
		I Ljubičić	77	6					I Ljubičić	4	2
	Q	D Prinosil	65	2											8	A Clément	7	65	78
		F Santoro	6	4	6											K Kučera	5	77	66
		B Vahaly	2	6	3				F Santoro	3	3
		K Kučera	6	68	77				K Kučera	6	6
	4	Y Kafelnikov	1	710	65																	8	A Clément	6	64	4
	7	N Davydenko	65	3																			N Kiefer	4	77	6
		F López	77	6					F López	1	6	5
		N Kiefer	6	6					N Kiefer	6	3	7
		O Rochus	3	0												N Kiefer	7	6
		N Escudé	6	3	0r											R Štěpánek	5	3
		R Štěpánek	3	6	3				R Štěpánek	6	66	6
		K Carlsen	3	4				2	R Schüttler	4	78	3
	2	R Schüttler	6	6

• 2003 Gerry Weber Open draw
• 2003 Gerry Weber Open Qualifying draw