Singles
2019 San Luis Open Challenger Tour
Final
Champion	Marc-Andrea Hüsler
Runner-up	Adrián Menéndez Maceiras
Score	7–5, 7–6(7–3)
Events
Singles Doubles
← 2018 · San Luis Open Challenger Tour · 2022 →

Marcelo Arévalo was the defending champion^[1] but lost in the second round to Marcelo Tomás Barrios Vera.

Marc-Andrea Hüsler won the title after defeating Adrián Menéndez Maceiras 7–5, 7–6^(7–3) in the final.

All seeds receive a bye into the second round.

	Quarterfinals							Semifinals							Final
	Alt	Pedro Sakamoto	2	6	6
		Marcelo Tomás Barrios Vera	6	1	4
								Alt	Pedro Sakamoto	2	4
									Marc-Andrea Hüsler	6	6
		Marc-Andrea Hüsler	4	7	6
	11	Lucas Miedler	6	5	3
																Marc-Andrea Hüsler	7	77
															2	Adrián Menéndez Maceiras	5	63
	PR	Facundo Mena	77	77
		Ante Pavić	65	64
								PR	Facundo Mena	6	3	5
								2	Adrián Menéndez Maceiras	4	6	7
		Alexandre Müller	0	2
	2	Adrián Menéndez Maceiras	6	6

	First round							Second round							Third round							Quarterfinals
								1	A Bublik	6	6
		K King	79	64	6				K King	4	3
		E King	67	77	3										1	A Bublik	3	5
		A Molčan	4	2											Alt	P Sakamoto	6	7
	Alt	P Sakamoto	6	6				Alt	P Sakamoto	6	6
								14	R Ortega Olmedo	4	2
																						Alt	P Sakamoto	2	6	6
																							MT Barrios Vera	6	1	4
								12	M Arévalo	4	4
		MT Barrios Vera	6	6					MT Barrios Vera	6	6
		R Olivo	4	2												MT Barrios Vera	w/o
	Q	G López Villaseñor	5	77	3										ITF	J Souza
	ITF	J Souza	7	64	6			ITF	J Souza	6	6
								8	M Safwat	3	4

	First round							Second round							Third round							Quarterfinals
								3	D Brown	6	2	4
		JP Varillas	5	3					G Escobar	4	6	6
		G Escobar	7	6												G Escobar	4	77	4
		M-A Hüsler	6	6												M-A Hüsler	6	65	6
	Q	S Verbeek	1	4					M-A Hüsler	6	6
								16	D Petrović	3	4
																							M-A Hüsler	4	7	6
																						11	L Miedler	6	5	3
								11	L Miedler	7	3	6
	WC	J Tipsarević	6	5	6			WC	J Tipsarević	5	6	3
	WC	L Gómez	4	7	2										11	L Miedler	6	6
	ITF	A Tabilo	77	7											6	R Quiroz	4	4
	ITF	M Guinard	61	5				ITF	A Tabilo	4	63
								6	R Quiroz	6	77

	First round							Second round							Third round							Quarterfinals
								5	M Bašić	7	2	1
	PR	C Gómez-Herrera	7	6				PR	C Gómez-Herrera	5	6	6
		M Zekić	5	3											PR	C Gómez-Herrera	2	4
	PR	F Mena	4	6	6										PR	F Mena	6	6
		Y Takahashi	6	3	0			PR	F Mena	6	6
								10	B Rola	2	4
																						PR	F Mena	77	77
																							A Pavić	65	64
								15	R Cid Subervi	3	6	3
		V Durasovic	6	3	5				A Pavić	6	1	6
		A Pavić	4	6	7											A Pavić	6	4	77
		V Estrella Burgos	5	1												E Escobedo	2	6	65
		E Escobedo	7	6					E Escobedo	7	2	6
								4	S Ofner	5	6	4

	First round							Second round							Third round							Quarterfinals
								7	P Krstin	1	1
		MF Descotte	79	4	3			ITF	J Menezes	6	6
	ITF	J Menezes	67	6	6										ITF	J Menezes	6	3	4
	WC	N Mejía	65	5												A Müller	3	6	6
		A Müller	77	7					A Müller	6	4	77
								9	J-P Smith	4	6	65
																							A Müller	0	2
																						2	A Menéndez Maceiras	6	6
								13	S Griekspoor	4	4
	ITF	Baptiste Crepatte	3	68				Alt	T Seyboth Wild	6	6
	Alt	T Seyboth Wild	6	710											Alt	T Seyboth Wild	2	4
	WC	M Sánchez	6	7											2	A Menéndez Maceiras	6	6
	WC	E Nava	2	5				WC	M Sánchez	6	1	2
								2	A Menéndez Maceiras	3	6	6

• Main draw
• Qualifying draw