Singles
2019 Monterrey Challenger
Final
Champion	Alexander Bublik
Runner-up	Emilio Gómez
Score	6–3, 6–2
Events
Singles Doubles
← 2018 · Monterrey Challenger · 2020 →

David Ferrer was the defending champion but chose not to defend his title.^[1]

Alexander Bublik won the title after defeating Emilio Gómez 6–3, 6–2 in the final.

All seeds receive a bye into the second round.

	Quarterfinals							Semifinals							Final
	1	Tennys Sandgren	6	64	6
	12	Marcos Giron	1	77	0
								1	Tennys Sandgren	6	2	65
								7	Alexander Bublik	2	6	77
	3	Feliciano López	65	3
	7	Alexander Bublik	77	6
															7	Alexander Bublik	6	6
																Emilio Gómez	3	2
	8	Peter Polansky	3	65
		Emilio Gómez	6	77
									Emilio Gómez	2	6	6
									Donald Young	6	3	4
		Donald Young	7	6
	2	Bradley Klahn	5	4

	First round							Second round							Third round							Quarterfinals
								1	T Sandgren	4	79	6
		R Olivo	6	7					R Olivo	6	67	2
		K Uchida	4	5											1	T Sandgren	77	4	6
	WC	N Mejía	4	6	3										16	D King	65	6	2
		E King	6	3	6				E King	6	63	1
								16	D King	4	77	6
																						1	T Sandgren	6	64	6
																						12	M Giron	1	77	0
								12	M Giron	6	6
	WC	E Nava	6	3	6			WC	E Nava	4	2
		B Gojo	4	6	4										12	M Giron	4	6	6
	PR	M Przysiężny	4	4											6	M Granollers	6	3	4
		DE Galán	6	6					DE Galán	3	4
								6	M Granollers	6	6

	First round							Second round							Third round							Quarterfinals
								3	F López	77	6
		C Gómez-Herrera	6	6					C Gómez-Herrera	63	4
		C Altamirano	1	4											3	F López	77	6
		JC Aragone	6	3	4										14	D Köpfer	64	2
		MT Barrios Vera	3	6	6				MT Barrios Vera	62	64
								14	D Köpfer	77	77
																						3	F López	65	3
																						7	A Bublik	77	6
								10	M Krueger	78	6
		E Escobedo	65	4				Q	K King	66	3
	Q	K King	77	6											10	M Krueger	62	3
		P Krstin	6	6											7	A Bublik	77	6
	WC	L Gómez	0	3					P Krstin	6	3	4
								7	A Bublik	1	6	6

	First round							Second round							Third round							Quarterfinals
								8	P Polansky	6	6
		Roy Smith	63	4				WC	J Tipsarević	3	2
	WC	J Tipsarević	77	6											8	P Polansky	77	77
		J-P Smith	6	6											9	C Eubanks	63	64
	WC	M Sánchez	4	2					J-P Smith	3	77	5
								9	C Eubanks	6	63	7
																						8	P Polansky	3	65
																							E Gómez	6	77
								13	J Ward	5	63
		G Escobar	2	6	5				A Pavić	7	77
		A Pavić	6	2	7											A Pavić	1	0
		A Collarini	5	2												E Gómez	6	6
		E Gómez	7	6					E Gómez	6	6
								4	C Ruud	2	4

	First round							Second round							Third round							Quarterfinals
								5	P Lorenzi	4	3
		D Young	6	6					D Young	6	6
		R Ortega Olmedo	4	4												D Young	6	6
		R Cid Subervi	64	3												S Giraldo	3	4
		S Giraldo	77	6					S Giraldo	3	7	77
								11	R Quiroz	6	5	61
																							D Young	7	6
																						2	B Klahn	5	4
								15	S Ofner	77	1	6
	LL	L Patiño	1	6	1				V Estrella Burgos	63	6	4
		V Estrella Burgos	6	3	6										15	S Ofner	3	3
		Evan Song	2	6	6										2	B Klahn	6	6
	Q	MF Descotte	6	3	0				E Song	4	3
								2	B Klahn	6	6

• Main draw
• Qualifying draw