2021 Challenger de Buenos Aires – Singles

Singles
2021 Challenger de Buenos Aires
Champion	Sebastián Báez
Runner-up	Thiago Monteiro
Score	6–4, 6–0

Main article: 2021 Challenger de Buenos Aires

Sumit Nagal was the defending champion but chose not to defend his title.

Sebastián Báez won the title after defeating Thiago Monteiro 6–4, 6–0 in the final.

Seeds

1. Thiago Monteiro (final)
2. Juan Manuel Cerúndolo (semifinals)
3. Francisco Cerúndolo (semifinals)
4. Juan Pablo Varillas (quarterfinals)
5. Hugo Dellien (quarterfinals)
6. Thiago Seyboth Wild (first round)
7. Sebastián Báez (champion)
8. Tomás Martín Etcheverry (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
• SR = Special ranking

Finals

	Semifinals							Final
	1	Thiago Monteiro	6	2	6
	3	Francisco Cerúndolo	1	6	3
								1	Thiago Monteiro	4	0
								7	Sebastián Báez	6	6
	7	Sebastián Báez	6	6
	2	Juan Manuel Cerúndolo	1	2

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	T Monteiro	79	3	6
		H Casanova	67	6	2			1	T Monteiro	6	6
		N Kicker	6	2	6				N Kicker	2	3
		N Álvarez	3	6	3										1	T Monteiro	6	3	7
		TA Tirante	4	0											8	TM Etcheverry	4	6	5
		R Olivo	6	6					R Olivo	6	61	4
	Q	Ignacio Monzón	0	3				8	TM Etcheverry	3	77	6
	8	TM Etcheverry	6	6																		1	T Monteiro	6	2	6
	3	F Cerúndolo	4	6	6																	3	F Cerúndolo	1	6	3
		C Ugo Carabelli	6	1	4			3	F Cerúndolo	7	6
		JP Ficovich	77	78					JP Ficovich	5	2
		N Sánchez Izquierdo	61	66											3	F Cerúndolo	6	6
	Q	M Cuevas	2	6	6										Q	M Cuevas	1	1
	Q	F Comesaña	6	3	2			Q	M Cuevas	77	7
	WC	M Navone	3	6	6			WC	M Navone	60	5
	6	T Seyboth Wild	6	1	2

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	S Báez	3	6	6
		P Cachin	6	2	3			7	S Báez	6	6
	Q	C Gómez-Herrera	3	4					JI Londero	3	4
		JI Londero	6	6											7	S Báez	7	6
		S Rodríguez Taverna	6	1											4	JP Varillas	5	2
	WC	RA Burruchaga	4	4r					S Rodríguez Taverna	4	2
		N Hardt	3	6	2			4	JP Varillas	6	6
	4	JP Varillas	6	3	6																	7	S Báez	6	6
	5	H Dellien	4	6	6																	2	JM Cerúndolo	1	2
		F Díaz Acosta	6	0	1			5	H Dellien	3	7	78
	WC	JB Torres	2	4					F Meligeni Alves	6	5	66
		F Meligeni Alves	6	6											5	H Dellien	6	5	65
		GA Olivieri	2	6	5										2	JM Cerúndolo	2	7	77
		A Collarini	6	4	7				A Collarini	4	6	4
		G Andreozzi	4	2				2	JM Cerúndolo	6	3	6
	2	JM Cerúndolo	6	6

External links

• Main draw
• Qualifying draw