2005 ATP Buenos Aires – Singles

Singles
2005 ATP Buenos Aires
Final
Champion	Gastón Gaudio
Runner-up	Mariano Puerta
Score	6–4, 6–4
Details
Draw	32
Seeds	8
Events
Singles Doubles
← 2004 · ATP Buenos Aires · 2006 →

Gastón Gaudio defeated Mariano Puerta 6–4, 6–4 to win the 2005 ATP Buenos Aires singles competition. Guillermo Coria was the champion but did not defend his title.

	Semifinals							Final
	WC	Mariano Puerta	6	77
		José Acasuso	4	65
								WC	Mariano Puerta	4	4
								2	Gastón Gaudio	6	6
		Alberto Martín	3	4
	2	Gastón Gaudio	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	C Moyà	6	77
	Q	P Luczak	3	65				1	C Moyà	6	6
		Á Costa	5	4					J Mónaco	1	2
		J Mónaco	7	6											1	C Moyà	60	3
	Q	J-P Guzmán	2	62											WC	M Puerta	77	6
	WC	M Puerta	6	77				WC	M Puerta	6	6
		L Burgsmüller	6	6					L Burgsmüller	2	0
	6	F Volandri	4	2																		WC	M Puerta	6	77
	LL	G García López	6	6																			J Acasuso	4	65
		D Sánchez	4	3				LL	G García López	4	3
		J Acasuso	6	6					J Acasuso	6	6
		P-H Mathieu	3	2												J Acasuso	6	6
		S Ventura	3	3												N Almagro	3	4
		N Almagro	6	6					N Almagro	64	6	6
		Á Calatrava	3	2				8	M Zabaleta	77	4	4
	8	M Zabaleta	6	6

	First round							Second round							Quarterfinals							Semifinals
	5	J I Chela	5	1
	Q	M López	7	6				Q	M López	6	65	64
		F Mantilla	6	77					F Mantilla	4	77	77
		Ó Hernández	4	60												F Mantilla	7	4	63
		D Ferrer	0r													A Martín	5	6	77
		A Martín	5						A Martín	6	6
		À Corretja	3	1				3	G Cañas	4	3
	3	G Cañas	6	6																			A Martín	3	4
	WC/7	R Nadal	77	6																		2	G Gaudio	6	6
		A Calleri	62	3				WC/7	R Nadal	6	6
	WC	E Massa	65	0					P Starace	1	3
		P Starace	77	6											WC/7	R Nadal	6	0	1
		Montañés	3	6	2										2	G Gaudio	0	6	6
		F Saretta	6	0	6				F Saretta	3	2
	Q	F Luzzi	6	1	3			2	G Gaudio	6	6
	2	G Gaudio	2	6	6

• 2005 ATP Buenos Aires Singles draw
• Doubles draw
• Qualifying Singles draw