Singles
2017 Challenger ATP Cachantún Cup
Champion	Rogério Dutra Silva
Runner-up	Nicolás Jarry
Score	7–5, 6–3

Facundo Bagnis was the defending champion but chose not to defend his title.

Rogério Dutra Silva won the title after defeating Nicolás Jarry 7–5, 6–3 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	1	Rogério Dutra Silva	6	6
	PR	Simone Bolelli	4	2
								1	Rogério Dutra Silva	7	6
								WC	Nicolás Jarry	5	3
	WC	Nicolás Jarry	w/o
	Q	Guilherme Clezar

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	R Dutra Silva	7	6
		J Samper-Montaña	5	0				1	R Dutra Silva	6	6
	Q	H Dellien	3	6	3				C Zampieri	3	3
		C Zampieri	6	4	6										1	R Dutra Silva	6	4	6
		M Cecchinato	77	6											Q	C Lindell	1	6	2
		J Hernández-Fernández	65	4					M Cecchinato	66	6	65
	Q	C Lindell	6	3	6			Q	C Lindell	78	4	77
	6	Í Cervantes	3	6	0																	1	R Dutra Silva	6	6
	4	T Daniel	6	3	6																	PR	S Bolelli	4	2
		F Coria	4	6	1			4	T Daniel	6	6
		M Bourgue	4	3					C Garin	4	0
		C Garin	6	6											4	T Daniel	4	4
		G Lama	3	1											PR	S Bolelli	6	6
		L Mayer	6	6					L Mayer	65	6	3
	PR	S Bolelli	6	3				PR	S Bolelli	77	4	6
	7	A Giannessi	4	2r

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	J Souza	6	6
	WC	MT Barrios Vera	3	4				8	J Souza	5	6	7
		C Ruud	6	6					C Ruud	7	4	5
	WC	M Soto	2	1											8	J Souza	65	66
	WC	N Jarry	6	6											WC	N Jarry	77	78
	Q	JP Varillas	1	4				WC	N Jarry	6	6
		M González	6	6					M González	4	4
	3	G Melzer	4	1																		WC	N Jarry	w/o
	5	A De Greef	78	6																		Q	G Clezar
		R Ramírez Hidalgo	66	2				5	A De Greef	77	4	1
		G Andreozzi	6	6					G Andreozzi	65	6	6
	WC	H Podlipnik-Castillo	2	2												G Andreozzi	4	6	3
	Q	G Clezar	3	6	6										Q	G Clezar	6	2	6
		T Lamasine	6	4	4			Q	G Clezar	4	6	7
		M Janvier	64	4				2	N Kicker	6	4	5
	2	N Kicker	77	6

References

• Main Draw
• Qualifying Draw