2018 San Luis Open Challenger Tour – Singles

Andrej Martin was the defending champion but chose not to defend his title.

Singles
2018 San Luis Open Challenger Tour
Champion	Marcelo Arévalo
Runner-up	Roberto Cid Subervi
Score	6–3, 6–7(3–7), 6–4

Main article: 2018 San Luis Open Challenger Tour

Marcelo Arévalo won the title after defeating Roberto Cid Subervi 6–3, 6–7^(3–7), 6–4 in the final.

Seeds

1. Paolo Lorenzi (first round)
2. Gerald Melzer (first round, retired)
3. Yannick Hanfmann (second round)
4. Thomaz Bellucci (second round)
5. Víctor Estrella Burgos (first round)
6. Evan King (first round)
7. Mitchell Krueger (first round)
8. Peđa Krstin (second round)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	Q	Roberto Cid Subervi	6	6
	Q	Pedro Sakamoto	3	3
								Q	Roberto Cid Subervi	3	77	4
									Marcelo Arévalo	6	63	6
		Daniel Elahi Galán	6	4	3
		Marcelo Arévalo	4	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	P Lorenzi	77	1	3
		A Krajicek	62	6	6				A Krajicek	0	2
		F Argüello	3	3					J Hernández-Fernández	6	6
		J Hernández-Fernández	6	6												J Hernández-Fernández	6	3	4
	Q	R Cid Subervi	6	6											Q	R Cid Subervi	2	6	6
		A Sarkissian	2	0				Q	R Cid Subervi	65	7	6
		F Bagnis	6	1	6				F Bagnis	77	5	1
	7	M Krueger	1	6	3																	Q	R Cid Subervi	6	6
	3	Y Hanfmann	1	7	6																	Q	P Sakamoto	3	3
		R Quiroz	6	5	3			3	Y Hanfmann	5	6	4
		J Clarke	6	2	6				J Clarke	7	2	6
	WC	T Hank	2	6	2											J Clarke	3	64
		F Coria	3	4											Q	P Sakamoto	6	77
	Q	P Sakamoto	6	6				Q	P Sakamoto	4	6	7
	WC	G López Villaseñor	2	3				8	P Krstin	6	3	5
	8	P Krstin	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	E King	3	3
		A González	6	6					A González	3	4
	WC	L Gómez	3	64				Q	G Escobar	6	6
	Q	G Escobar	6	77											Q	G Escobar	2	3
		DE Galán	62	77	7											DE Galán	6	6
		J Souza	77	64	5				DE Galán	6	6
		A Collarini	3	4				4	T Bellucci	3	3
	4	T Bellucci	6	6																			DE Galán	6	4	3
	5	V Estrella Burgos	1	4																			M Arévalo	4	6	6
		M Arévalo	6	6					M Arévalo	6	77
		D Muñoz de la Nava	6	7					D Muñoz de la Nava	3	64
	Q	K Krawietz	4	5												M Arévalo	6	3	6
	WC	M Sánchez	6	6												J Choinski	2	6	3
		I Nedelko	0	2				WC	M Sánchez	4	5
		J Choinski	6	3					J Choinski	6	7
	2	G Melzer	1	1r

References

• Main draw
• Qualifying draw