2021 Challenger de Santiago – Singles

Hugo Dellien was the defending champion but chose not to defend his title.

Singles
2021 Challenger de Santiago
Champion	Sebastián Báez
Runner-up	Marcelo Tomás Barrios Vera
Score	6–3, 7–6(7–4)

Main article: 2021 Challenger de Santiago

Sebastián Báez won the title after defeating Marcelo Tomás Barrios Vera 6–3, 7–6^(7–4) in the final.

Seeds

1. Roberto Carballés Baena (second round)
2. Andrej Martin (second round)
3. Pedro Sousa (second round)
4. Facundo Bagnis (withdrew)
5. Jozef Kovalík (first round)
6. Daniel Altmaier (second round)
7. Kimmer Coppejans (second round)
8. Alejandro Tabilo (first round)

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
• SR = Special ranking

Finals

	Semifinals							Final
		Marcelo Tomás Barrios Vera	77	1
		Felipe Meligeni Alves	65	1r
									Marcelo Tomás Barrios Vera	3	64
									Sebastián Báez	6	77
		Sebastián Báez	6	77
		Juan Pablo Varillas	1	63

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	R Carballés Baena	2	6	77
		T Bellucci	6	2	60			1	R Carballés Baena	6	65	68
	WC	G Lama	6	6				WC	G Lama	2	77	710
		TM Etcheverry	4	2											WC	G Lama	64	65
		MT Barrios Vera	4	6	77											MT Barrios Vera	77	77
		C Lindell	6	1	64				MT Barrios Vera	6	6
		O Luz	3	1				7	K Coppejans	4	4
	7	K Coppejans	6	6																			MT Barrios Vera	77	1
	3	P Sousa	6	6																			F Meligeni Alves	65	1r
	LL	R Matos	4	3				3	P Sousa	4	2
		F Meligeni Alves	5	6	7				F Meligeni Alves	6	6
	Q	J Menezes	7	3	5											F Meligeni Alves	6	7
		E Benchetrit	6	6											Q	N Kicker	1	5
		G Blancaneaux	4	4					E Benchetrit	2	4
	Q	N Kicker	6	6				Q	N Kicker	6	6
	5	J Kovalík	2	3

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	D Altmaier	6	6
		G Andreozzi	4	3				6	D Altmaier	4	6	3
	Alt	C Ugo Carabelli	6	6				Alt	C Ugo Carabelli	6	3	6
	Q	M Cuevas	4	0											Alt	C Ugo Carabelli	2	1
	WC	H Rune	2	4												S Báez	6	6
		S Báez	6	6					S Báez	7	6
		A Collarini	4	4				Q	G Villanueva	5	2
	Q	G Villanueva	6	6																			S Báez	6	77
	8	A Tabilo	3	2																			JP Varillas	1	63
	WC	N Jarry	6	6				WC	N Jarry	6	6
		N Álvarez	3	6	6				N Álvarez	3	4
		P Sakamoto	6	4	3										WC	N Jarry	2	4
		JP Varillas	6	3	7											JP Varillas	6	6
		R Olivo	4	6	5				JP Varillas	6	69	6
		G Oliveira	62	5				2	A Martin	4	711	4
	2	A Martin	77	7

External links

• Main draw
• Qualifying draw