Singles
2018 Monterrey Open
Champion	Garbiñe Muguruza
Runner-up	Tímea Babos
Score	3–6, 6–4, 6–3

Anastasia Pavlyuchenkova was the defending champion, but withdrew before the tournament began.

Garbiñe Muguruza won the title, defeating Tímea Babos in the final, 3–6, 6–4, 6–3.

Seeds

Draw

Finals

	Semifinals							Final
	1	Garbiñe Muguruza	6	7
	6	Ana Bogdan	0	5
								1	Garbiñe Muguruza	3	6	6
								4	Tímea Babos	6	4	3
	4	Tímea Babos	1	6	6
	7	Sachia Vickery	6	2	2

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	G Muguruza	6	6
	WC	R Zarazúa	1	1				1	G Muguruza	6	6
		E Rodina	0	64					A Riske	2	3
		A Riske	6	77											1	G Muguruza	6	6
		A Blinkova	79	5	6										8	A Tomljanović	3	0
		R Peterson	67	7	4				A Blinkova	2	7	2
		AK Schmiedlová	6	1	66			8	A Tomljanović	6	5	6
	8	A Tomljanović	4	6	78																	1	G Muguruza	6	7
	3	L Tsurenko	62	6	6																	6	A Bogdan	0	5
		N Hibino	77	4	4			3	L Tsurenko
		M Duque Mariño	1	3					D Collins	w/o
		D Collins	6	6												D Collins	2	4
		S Sorribes Tormo	6	7											6	A Bogdan	6	6
		T Martincová	1	5					S Sorribes Tormo	2	3
	WC	V Rodríguez	6	4	65			6	A Bogdan	6	6
	6	A Bogdan	4	6	77

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	M Puig	6	6
		N Gibbs	3	3				5	M Puig	6	6
		S Vögele	6	6					S Vögele	4	3
	Q	D Jakupović	3	4											5	M Puig	4	2
		N Broady	6	65	6										4	T Babos	6	6
		C Zhao	3	77	2				N Broady	3	78	5
	Q	M Bouzková	3	4				4	T Babos	6	66	7
	4	T Babos	6	6																		4	T Babos	1	6	6
	7	S Vickery	6	6																		7	S Vickery	6	2	2
		I Falconi	1	4				7	S Vickery	6	6
	Q	UM Arconada	3	6	4			WC	AS Sánchez	3	3
	WC	AS Sánchez	6	4	6										7	S Vickery	6	6
	Q	V Grammatikopoulou	0	2											2	M Rybáriková	0	3
		J Fett	6	6					J Fett	5	2
		R Ozaki	4	3				2	M Rybáriková	7	6
	2	M Rybáriková	6	6

Qualifying

Draw

First qualifier

	First round							Second round							Qualifying competition
	1	Ysaline Bonaventure	65	77	1
		Priscilla Hon	77	62	6
									Priscilla Hon	64	3
									Valentini Grammatikopoulou	77	6
		Tereza Mrdeža	3	6	2
		Valentini Grammatikopoulou	6	2	6
																Valentini Grammatikopoulou	6	6
															8	Conny Perrin	2	2
		Ashley Kratzer	6	1	3
	WC	Yana Sizikova	3	6	6
								WC	Yana Sizikova	5	0
								8	Conny Perrin	7	6
		Emina Bektas	3	3
	8	Conny Perrin	6	6

Second qualifier

	First round							Second round							Qualifying competition
	2	Miyu Kato	6	6
	WC	Andrea Renée Villarreal	2	3
								2	Miyu Kato	6	3	3
									Sabrina Santamaria	1	6	6
		Nadia Podoroska	4	6	5
		Sabrina Santamaria	6	2	7
																Sabrina Santamaria	2	5
															6	Dalila Jakupović	6	7
		Cornelia Lister	5	6	6
		Valeria Savinykh	7	3	2
									Cornelia Lister	4	66
								6	Dalila Jakupović	6	78
		Irina Khromacheva	2	3
	6	Dalila Jakupović	6	6

Third qualifier

	First round							Second round							Qualifying competition
	3	Jasmine Paolini	6	2	6
	WC	Marcela Zacarías	2	6	1
								3	Jasmine Paolini	6	6
									Andrea Gámiz	0	0
		Miharu Imanishi	66	6	4
		Andrea Gámiz	78	4	6
															3	Jasmine Paolini	1	7	1
																Usue Maitane Arconada	6	5	6
		Jovana Jakšić	6	3	6
		Olga Ianchuk	3	6	4
									Jovana Jakšić	5	1
									Usue Maitane Arconada	7	6
		Usue Maitane Arconada	6	6
	5	Lizette Cabrera	3	4

Fourth qualifier

	First round							Second round							Qualifying competition
	4	Jamie Loeb	6	6
		Danielle Lao	3	2
								4	Jamie Loeb	3	2
									Deniz Khazaniuk	6	6
		Giuliana Olmos	0	2
		Deniz Khazaniuk	6	6
																Deniz Khazaniuk	2	7	5
															7	Marie Bouzková	6	5	7
		Aliona Bolsova Zadoinov	6	6
	WC	Rushri Wijesundera	1	3
									Aliona Bolsova Zadoinov	1	2
								7	Marie Bouzková	6	6
		Jacqueline Cako	3	4
	7	Marie Bouzková	6	6

References

• Main Draw
• Qualifying Draw