2018 Challenger Ciudad de Guayaquil – Singles

Gerald Melzer was the defending champion but lost in the first round to Federico Coria.

Singles
2018 Challenger Ciudad de Guayaquil
Champion	Guido Andreozzi
Runner-up	Pedro Sousa
Final score	7–5, 1–6, 6–4

Main article: 2018 Challenger Ciudad de Guayaquil

Guido Andreozzi won the title after defeating Pedro Sousa 7–5, 1–6, 6–4 in the final.

Seeds

1. Pablo Cuevas (Quarterfinals)
2. Federico Delbonis (Withdrew)
3. Guido Andreozzi (Champion)
4. Christian Garín (Withdrew)
5. Paolo Lorenzi (Second round)
6. Thiago Monteiro (First round)
7. Hugo Dellien (Second round)
8. Juan Ignacio Londero (Quarterfinals)

Draw

Key

• Q = Qualifier
• WC = Wild Card
• LL = Lucky Loser
• Alt = Alternate
• SE = Special Exempt
• PR = Protected Ranking
• ITF = ITF entry
• JE = Junior Exempt
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
		Arthur De Greef	5	2
		Pedro Sousa	7	6
									Pedro Sousa	5	6	4
								3	Guido Andreozzi	7	1	6
	3	Guido Andreozzi	6	7^10
	PR	Santiago Giraldo	4	6^8

Top half

	First Round							Second Round							Quarterfinals							Semifinals
	1	P Cuevas	6	6
	WC	D Hidalgo	3	0				1	P Cuevas	6	2	6
		G Melzer	2	4				Q	F Coria	4	6	1
	Q	F Coria	6	6											1	P Cuevas	5	3
		DE Galán	4	0												A De Greef	7	6
		A De Greef	6	6					A De Greef	6	6
	WC	J Hernández-Fernández	6	7^7				WC	J Hernández-Fernández	0	4
	6	T Monteiro	1	6^2																			A De Greef	5	2
	LL	U Blanch	7	6																			P Sousa	7	6
		F Bagnis	5	4				LL	U Blanch	4	1
		F Argüello	4	6	6				F Argüello	6	6
		G Clezar	6	2	1											F Argüello	6^6	3
	WC	N Álvarez	4	4												P Sousa	7^8	6
		P Sousa	6	6					P Sousa	4	6	6
	Q	T Seyboth Wild	6	3	4			7	H Dellien	6	1	4
	7	H Dellien	3	6	6

Bottom half

	First Round							Second Round							Quarterfinals							Semifinals
	5	P Lorenzi	6	6^6	7^7
	Q	M Cuevas	4	7^8	6^5			5	P Lorenzi	6^6	2
		P Krstin	6	7^7					P Krstin	7^8	6
		R Cid Subervi	3	6^3												P Krstin	4	2
	WC	E Gómez	2	6	4										3	G Andreozzi	6	6
		T Bellucci	6	3	6				T Bellucci	3	2
		C Berlocq	6^6	2				3	G Andreozzi	6	6
	3	G Andreozzi	7^8	6																		3	G Andreozzi	6	7^10
	8	JI Londero	6	6																		PR	S Giraldo	4	6^8
		L Giustino	2	4				8	JI Londero	6^5	7^9	6
	Q	JP Varillas	3	6	3				R Quiroz	7^7	6^7	1
		R Quiroz	6	3	6										8	JI Londero	7	6^3	6^7
	PR	S Giraldo	7	6											PR	S Giraldo	5	7^7	7^9
		J Domingues	5	3				PR	S Giraldo	7	7
		G Elias	6^3	6	1			LL	M Zekić	5	5
	LL	M Zekić	7^7	0	6

References

• Main Draw
• Qualifying Draw