Singles
2005 Mercedes Cup
Final
Champion	Rafael Nadal
Runner-up	Gastón Gaudio
Score	6–3, 6–3, 6–4
Details
Draw	48
Seeds	16
Events
Singles Doubles
← 2004 · Stuttgart Open · 2006 →

Rafael Nadal defeated Gastón Gaudio in the final, 6–3, 6–3, 6–4 to win the singles tennis title at the 2005 Stuttgart Open.

Guillermo Cañas was the reigning champion, but did not participate this year.

• Q - Qualifier
• WC - Wild Card
• r - Retired
• LL - Lucky loser
• w/o - Walkover

	Quarterfinals							Semifinals							Final
	1	Rafael Nadal	6	6
		Tomáš Zíb	2	1
								1	Rafael Nadal	6	7
									Jarkko Nieminen	2	5
	Andreas Seppi		2	3
	Jarkko Nieminen		6	6
															1	Rafael Nadal	6	6	6
															3	Gastón Gaudio	3	3	4
		Mariano Zabaleta	4	6	2
	3	Gastón Gaudio	6	1	6
								3	Gastón Gaudio	6	2
								2	Nikolay Davydenko	3	1r
	11	Tomáš Berdych	4	2
	2	Nikolay Davydenko	6	6

	First round							Second round							Third round							Quarterfinals
								1	R Nadal	6	6
		G Kuerten	4	1				Q	H Armando	1	2
	Q	H Armando	6	6											1	R Nadal	6	6
		N Almagro	64	0												F Verdasco	3	2
		F Verdasco	77	6					F Verdasco	6	5	77
								14	I Andreev	4	7	65
																						1	R Nadal	6	6
																							T Zíb	2	1
								12	A Pavel	7	3	1
	Q	S Greul	6	67	2				T Zíb	5	6	6
		T Zíb	4	79	6											T Zíb	6	77
	WC	T Summerer	1	4												J Mónaco	4	64
		J Mónaco	6	6					J Mónaco	6	6
								5	D Ferrer	4	2

	First round							Second round							Third round							Quarterfinals
								4	T Robredo	64	6	6
		G Monfils	2	3					P Starace	77	3	2
		P Starace	6	6											4	T Robredo	5	6	1
		F Mayer	63	3												A Seppi	7	2	6
		A Seppi	77	6					A Seppi	6	6
								15	A Martín	4	4
																							A Seppi	2	3
																							J Nieminen	6	6
								10	J Melzer	4	77	4
		J Nieminen	65	6	6				J Nieminen	6	64	6
		L Burgsmüller	77	0	1											J Nieminen	2	6	710
	Q	C Berlocq	2	2											6	J Novák	6	2	68
		R Sabău	6	6					R Sabău	6	4	0
								6	J Novák	4	6	6

	First round							Second round							Third round							Quarterfinals
								8	F Volandri	3	6	4
		G Simon	63	6	6				G Simon	6	2	6
		A Montañés	77	1	1											G Simon	63	1
		M Zabaleta	6	6												M Zabaleta	77	6
	WC	A Thron	2	3					M Zabaleta	4	6	6
								9	O Rochus	6	2	3
																							M Zabaleta	4	6	2
																						3	G Gaudio	6	1	6
								16	P-H Mathieu	6	6
		A Costa	6	6					A Costa	3	4
	Q	G Blanco	4	4											16	P-H Mathieu	2	77	0
		A di Mauro	4	3											3	G Gaudio	6	63	6
	WC	A Beck	6	6				WC	A Beck	3	3
								3	G Gaudio	6	6

	First round							Second round							Third round							Quarterfinals
								7	M Youzhny	5	3
		R Schüttler	77	6					R Schüttler	7	6
	Q	F Vicente	63	4												R Schüttler	64	1
	Q	JP Brzezicki	6	3	3										11	T Berdych	77	6
		P Kohlschreiber	3	6	6				P Kohlschreiber	64	6	3
								11	T Berdych	77	1	6
																						11	T Berdych	4	2
																						2	N Davydenko	6	6
								13	J Acasuso	5	4
	WC	A Waske	7	6				WC	A Waske	7	6
		J Haehnel	5	2											WC	A Waske	63	3
		R Ramírez Hidalgo	6	6											2	N Davydenko	77	6
		S Koubek	4	3					R Ramírez Hidalgo	4	1
								2	N Davydenko	6	6

• Main draw