2021 Challenger de Santiago III – Singles

Singles
2021 Challenger de Santiago III
Champion	Sebastián Báez
Runner-up	Felipe Meligeni Alves
Score	3–6, 7–6(8–6), 6–1

Main article: 2021 Challenger de Santiago III

Juan Pablo Varillas was the defending champion but lost in the quarterfinals to Marcelo Tomás Barrios Vera.

Sebastián Báez won the title after defeating Felipe Meligeni Alves 3–6, 7–6^(8–6), 6–1 in the final.

Seeds

1. Juan Manuel Cerúndolo (quarterfinals)
2. Francisco Cerúndolo (quarterfinals)
3. Juan Pablo Varillas (quarterfinals)
4. Thiago Seyboth Wild (first round)
5. Sebastián Báez (champion)
6. Marcelo Tomás Barrios Vera (semifinals)
7. Juan Ignacio Londero (second round)
8. Enzo Couacaud (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
	5	Sebastián Báez	3	6	6
	6	Marcelo Tomás Barrios Vera	6	3	4
								5	Sebastián Báez	3	78	6
									Felipe Meligeni Alves	6	66	1
		Felipe Meligeni Alves	6	6
		Matheus Pucinelli de Almeida	2	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	JM Cerúndolo	6	6
		J Lenz	3	3				1	JM Cerúndolo	6	3	6
	WC	Benjamín Torres	3	4					P Cachin	4	6	2
		P Cachin	6	6											1	JM Cerúndolo	3	4
		JP Ficovich	6	6											5	S Báez	6	6
		G Oliveira	3	1					JP Ficovich	1	5
	Q	N Álvarez	5	3				5	S Báez	6	7
	5	S Báez	7	6																		5	S Báez	3	6	6
	3	JP Varillas	6	6																		6	MT Barrios Vera	6	3	4
		F Mena	4	2				3	JP Varillas	6	1	6
		D Svrčina	6	6					D Svrčina	4	6	4
	Q	D Hidalgo	2	0											3	JP Varillas	3	4
	Q	R Matos	2	6	4										6	MT Barrios Vera	6	6
	WC	D Fernández Flores	6	4	6			WC	D Fernández Flores	0	1
	LL	L Catarina	5	2				6	MT Barrios Vera	6	6
	6	MT Barrios Vera	7	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	JI Londero	6	3	6
	Alt	G Lama	2	6	1			7	JI Londero	6	3	4
	Q	O Crawford	66	3					F Meligeni Alves	2	6	6
		F Meligeni Alves	78	6												F Meligeni Alves	6	5	7
		N Jarry	62	4											PR	G Melzer	3	7	5
	PR	G Melzer	77	6				PR	G Melzer	6	6
		TA Tirante	6	4	6				TA Tirante	2	0
	4	T Seyboth Wild	4	6	2																		F Meligeni Alves	6	6
	8	E Couacaud	1	1																			M Pucinelli de Almeida	2	4
		M Pucinelli de Almeida	6	6					M Pucinelli de Almeida	3	6	6
		N Kicker	6	6					N Kicker	6	2	4
	WC	M Soto	3	0												M Pucinelli de Almeida	77	2	6
	Alt	N Chappell	3	4											2	F Cerúndolo	63	6	4
	Alt	H Casanova	6	6				Alt	H Casanova	2	5
	Alt	F Díaz Acosta	4	0				2	F Cerúndolo	6	7
	2	F Cerúndolo	6	6

External links

• Main draw
• Qualifying draw