Singles
2018 Argentina Open
Champion	Dominic Thiem
Runner-up	Aljaž Bedene
Score	6–2, 6–4
Draw	28 (4 Q / 3 WC )
Seeds	8

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.

Seeds

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

Draw

Finals

	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

Top half

	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

Bottom half

	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

Qualifying

Qualifying draw

First qualifier

	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

Second qualifier

	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

Third qualifier

	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

Fourth qualifier

	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

External links

• Main draw
• Qualifying draw