Singles
2019 Argentina Open
Final
Champion	Marco Cecchinato
Runner-up	Diego Schwartzman
Score	6–1, 6–2
Details
Draw	28 (4 Q / 3 WC )
Seeds	8
Events
Singles Doubles
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Dominic Thiem was the defending champion, but lost to Diego Schwartzman in the semifinals.^[1]

Marco Cecchinato won the title, defeating Schwartzman in the final, 6–1, 6–2.

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

	Semifinals							Final
	1	Dominic Thiem	6	4	65
	4	Diego Schwartzman	2	6	77
								4	Diego Schwartzman	1	2
								3	Marco Cecchinato	6	6
	3	Marco Cecchinato	6	6
		Guido Pella	4	2

	First round							Second round							Quarterfinals							Semifinals
								1	D Thiem	6	6
	Q	F Bagnis	4	2					M Marterer	4	4
		M Marterer	6	6											1	D Thiem	4	6	6
	Q	M Arévalo	2	1												P Cuevas	6	4	3
		P Cuevas	6	6					P Cuevas	6	7
	SE	JI Londero	3	4				5	J Sousa	4	5
	5	J Sousa	6	6																		1	D Thiem	6	4	65
																						4	D Schwartzman	2	6	77
								4	D Schwartzman	6	2	6
		G Andreozzi	6	65	2				A Bedene	4	6	2
		A Bedene	1	77	6										4	D Schwartzman	6	7
		A Ramos Viñolas	6	6												A Ramos Viñolas	1	5
	Q	R Dutra Silva	3	4					A Ramos Viñolas	3	711	6
	WC	D Ferrer	715	6				WC	D Ferrer	6	69	3
	8	M Jaziri	613	3

	First round							Second round							Quarterfinals							Semifinals
	6	N Jarry	77	4	3
	Q	L Sonego	63	6	6			Q	L Sonego	5	1
		R Carballés Baena	6	6					R Carballés Baena	7	6
		T Daniel	1	0												R Carballés Baena	63	4
		C Garín	3	7	6										3	M Cecchinato	77	6
	WC	F Auger-Aliassime	6	5	3				C Garín	64	4
								3	M Cecchinato	77	6
																						3	M Cecchinato	6	6
	7	D Lajović	3	63																			G Pella	4	2
		L Mayer	6	77					L Mayer	4	6	65
	WC	F Cerúndolo	6	4	1				G Pella	6	1	77
		G Pella	3	6	6											G Pella	63	711	6
		J Munar	6	2	6											J Munar	77	69	1
		F Delbonis	2	6	1				J Munar	4	6	7
								2	F Fognini	6	4	5

	First round							Qualifying competition
	1	Cameron Norrie	6	4	7
		Andrej Martin	4	6	5
								1	Cameron Norrie	78	63	2
									Rogério Dutra Silva	66	77	6
		Rogério Dutra Silva	6	3	6
	7	Casper Ruud	2	6	4

	First round							Qualifying competition
	2	Thiago Monteiro	710	4	4
		Facundo Bagnis	68	6	6
									Facundo Bagnis	77	6
								5	Hugo Dellien	65	2
	WC	Juan Bautista Otegui	2	2
	5	Hugo Dellien	6	6

	First round							Qualifying competition
	3	Lorenzo Sonego	6	7
		Federico Gaio	4	5
								3	Lorenzo Sonego	6	3
									Alessandro Giannessi	4	3r
		Alessandro Giannessi	6	6
	6	Marco Trungelliti	4	1

	First round							Qualifying competition
	4	Elias Ymer	3	6	7
	WC	Juan Pablo Ficovich	6	4	5
								4	Elias Ymer	4	6	4
									Marcelo Arévalo	6	1	6
		Marcelo Arévalo	6	6
	8	Carlos Berlocq	4	3

• Main draw
• Qualifying draw