2025 Argentina Open – Singles

João Fonseca defeated Francisco Cerúndolo in the final, 6–4, 7–6^(7–1) to win the singles tennis title at the 2025 Argentina Open.^[1] He saved two match points (in the quarterfinals against Mariano Navone) en route to his first ATP Tour title. Fonseca was the youngest Brazilian man and the second-youngest South American in the Open Era, behind only Guillermo Pérez Roldán in 1987, and the first man born in 2006, to win a top-level title.^[2] He entered the tournament through the Next Gen Accelerator Program introduced by the ATP in 2024, being the first player entered under the system to win a tour-level title. Fonseca was the first Brazilian man to win the Argentina Open title since Gustavo Kuerten in 2001, and the lowest-ranked champion (world No. 99) in tournament history.^[3]

Singles
2025 Argentina Open
Champion	João Fonseca
Runner-up	Francisco Cerúndolo
Score	6–4, 7–6(7–1)
Draw	28 (4 Q / 3 WC )
Seeds	8

Main article: 2025 Argentina Open

Facundo Díaz Acosta was the defending champion,^[4][5] but lost in the first round to Thiago Seyboth Wild.^[6]

This tournament marked the final professional appearance of former world No. 8 Diego Schwartzman.^[7] He defeated seventh seed Nicolás Jarry in the first round,^[8] before losing in the second round to Pedro Martínez.^[9]

Seeds

The top four seeds received a bye into the second round.

1. Alexander Zverev (quarterfinals)
2. Holger Rune (second round)
3. Lorenzo Musetti (quarterfinals, withdrew)
4. Alejandro Tabilo (second round)
5. Francisco Cerúndolo (final)
6. Sebastián Báez (second round)
7. Nicolás Jarry (first round)
8. Tomás Martín Etcheverry (first round)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	5	Francisco Cerúndolo	6	6
		Pedro Martínez	2	4
								5	Francisco Cerúndolo	4	61
									João Fonseca	6	77
	Q	Laslo Djere	63	7	1
		João Fonseca	77	5	6

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	A Zverev	6	6
		R Carballés Baena	68	5					D Lajović	4	4
		D Lajović	710	7											1	A Zverev	6	3	2
	Q	RA Burruchaga	64	7	5										5	F Cerúndolo	3	6	6
	Q	JM Cerúndolo	77	5	7			Q	JM Cerúndolo	2	3
		L Darderi	4	4				5	F Cerúndolo	6	6
	5	F Cerúndolo	6	6																		5	F Cerúndolo	6	6
																							P Martínez	2	4
								3	L Musetti	6	6
		C Moutet	7	6					C Moutet	2	3
	LL	S Nagal	5	2											3	L Musetti
		D Džumhur	6	2	63											P Martínez	w/o
		P Martínez	0	6	77				P Martínez	6	6
	WC	D Schwartzman	712	4	6			WC	D Schwartzman	2	2
	7	N Jarry	610	6	3

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	S Báez	6	6
	WC	C Ugo Carabelli	4	4				6	S Báez	3	4
		F Díaz Acosta	6	2	3				T Seyboth Wild	6	6
		T Seyboth Wild	3	6	6											T Seyboth Wild	63	3
		A Müller	3	3											Q	L Djere	77	6
	Q	L Djere	6	6				Q	L Djere	2	6	77
								4	A Tabilo	6	1	62
																						Q	L Djere	63	7	1
	8	TM Etcheverry	3	3																			J Fonseca	77	5	6
		J Fonseca	6	6					J Fonseca	2	6	6
		H Gaston	3	2				LL	F Coria	6	4	2
	LL	F Coria	6	6												J Fonseca	3	6	7
		M Navone	6	6												M Navone	6	4	5
	WC	F Comesaña	4	4					M Navone	6	77
								2	H Rune	1	62

Qualifying

Seeds

1. Francesco Passaro (qualified, withdrew)
2. Thiago Monteiro (first round)
3. Federico Coria (qualifying competition, lucky loser)
4. Sumit Nagal (qualifying competition, retired, lucky loser)
5. Jaime Faria (first round)
6. Laslo Djere (qualified)
7. Hugo Dellien (withdrew, still playing in Rosario)
8. Tseng Chun-hsin (first round)

Qualifiers

1. Francesco Passaro (withdrew)
2. Román Andrés Burruchaga
3. Laslo Djere
4. Juan Manuel Cerúndolo

Lucky losers

1. Federico Coria
2. Sumit Nagal

Qualifying draw

First qualifier

	First round							Qualifying competition
	1	Francesco Passaro	6	6
		Daniel Elahi Galán	1	4
								1	Francesco Passaro	2	78	6
								WC	Juan Bautista Torres	6	66	1
	WC	Juan Bautista Torres	6	3	7
	8	Tseng Chun-hsin	1	6	5

Second qualifier

	First round							Qualifying competition
	2	Thiago Monteiro	7	3	68
	Alt	Felipe Meligeni Alves	5	6	710
								Alt	Felipe Meligeni Alves	6	2	63
								Alt	Román Andrés Burruchaga	2	6	77
	Alt	Román Andrés Burruchaga	6	6
	Alt	Gustavo Heide	3	4

Third qualifier

	First round							Qualifying competition
	3	Federico Coria	5	710	4
		Thiago Agustín Tirante	7	68	1r
								3	Federico Coria	2	4
								6	Laslo Djere	6	6
	Alt	Marco Trungelliti	4	4
	6	Laslo Djere	6	6

Fourth qualifier

	First round							Qualifying competition
	4	Sumit Nagal	64	6	77
	WC	Juan Pablo Ficovich	77	2	64
								4	Sumit Nagal	6	65	0r
									Juan Manuel Cerúndolo	3	77	1
		Juan Manuel Cerúndolo	6	77
	5	Jaime Faria	1	61