Singles
2018 Argentina Open
Final
Champion	Dominic Thiem
Runner-up	Aljaž Bedene
Score	6–2, 6–4
Details
Draw	28 (4 Q / 3 WC )
Seeds	8
Events
Singles Doubles
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Alexandr Dolgopolov was the defending champion, but withdrew before the tournament began.

Dominic Thiem won the title, defeating Aljaž Bedene in the final, 6–2, 6–4.

The top four seeds receive a bye into the second round.

	Semifinals							Final
	1	Dominic Thiem	6	6
		Gaël Monfils	2	1
								1	Dominic Thiem	6	6
									Aljaž Bedene	2	4
		Aljaž Bedene	6	2	6
		Federico Delbonis	4	6	1

	First round							Second round							Quarterfinals							Semifinals
								1	D Thiem	6	6
		H Zeballos	6	6					H Zeballos	4	3
	Q	M Cecchinato	1	4											1	D Thiem	79	6
	WC	N Kicker	6	4	4											G Pella	67	4
		G Pella	2	6	6				G Pella	6	6
	SE	T Monteiro	2	5				8	F Verdasco	2	4
	8	F Verdasco	6	7																		1	D Thiem	6	6
																							G Monfils	2	1
								4	F Fognini	3	3
	Q	R Dutra Silva	77	2	4				L Mayer	6	6
		L Mayer	64	6	6											L Mayer	4	6	3
		D Lajović	77	6												G Monfils	6	3	6
	Q	F Bagnis	64	1					D Lajović	4	3
		G Monfils	6	6					G Monfils	6	6
	7	P Cuevas	1	4

	First round							Second round							Quarterfinals							Semifinals
	5	D Schwartzman	6	6
	PR	A Haider-Maurer	4	3				5	D Schwartzman	3	6	6
	Q	T Bellucci	6	6				Q	T Bellucci	6	3	2
	WC	P Cachin	2	1											5	D Schwartzman	4	4
		J Veselý	0	3												A Bedene	6	6
		A Bedene	6	6					A Bedene	3	7	6
								3	A Ramos Viñolas	6	5	1
																							A Bedene	6	2	6
	LL	G Elias	6	6																			F Delbonis	4	6	1
	SE	R Carballés Baena	2	4				LL	G Elias	65	66
		F Delbonis	77	6					F Delbonis	77	78
		F Mayer	64	4												F Delbonis	6	7
	WC	C Berlocq	3	3												G García López	3	5
		G García López	6	6					G García López	77	1	78
								2	P Carreño Busta	65	6	66

1. Gastão Elias

	First round							Qualifying competition
	1	Tennys Sandgren	1	2
		Facundo Bagnis	6	6
									Facundo Bagnis	67	6	6
								5	Gastão Elias	79	1	1
	Alt	João Souza	6	3	0
	5	Gastão Elias	4	6	6

	First round							Qualifying competition
	2	Marco Cecchinato	6	6
		Guido Andreozzi	4	3
								2	Marco Cecchinato	6	77
								6	Casper Ruud	3	64
		João Domingues	1	3
	6	Casper Ruud	6	6

	First round							Qualifying competition
	3	Rogério Dutra Silva	69	6	2
	Alt	Andrea Collarini	711	3	1r
								3	Rogério Dutra Silva	77	77
								Alt	Guilherme Clezar	65	65
	Alt	Guilherme Clezar	7	6
	7	Renzo Olivo	5	0

	First round							Qualifying competition
	4	Thomaz Bellucci	6	6
	WC	Juan Ignacio Galarza	4	4
								4	Thomaz Bellucci	6	6
								WC	Hernán Casanova	2	4
	WC	Hernán Casanova	77	6
	8	Alessandro Giannessi	65	4

• Main draw
• Qualifying draw