Daniel Vallejo

In this name that follows Hispanic American naming customs, the first or paternal surname is Vallejo and the second or maternal family name is Álvarez.

Daniel Vallejo

Vallejo in 2023
Full name	Adolfo Daniel Vallejo Álvarez
Country (sports)	Paraguay
Born	(2004-04-28) 28 April 2004 Asunción, Paraguay
Height	1.85 m (6 ft 1 in)
Plays	Right-handed (two-handed backhand)
Coach	Andrés Schneiter
Prize money	US $922,717
Singles
Career record	20–15 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles	0 5 Challenger
Highest ranking	No. 60 (31 August 2026)
Current ranking	No. 60 (31 August 2026)
Grand Slam singles results
Australian Open	Q3 (2026)
French Open	2R (2026)
Wimbledon	1R (2026)
Doubles
Career record	3–5 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles	0 1 Challenger
Highest ranking	No. 435 (21 April 2025)
Current ranking	No. 499 (31 August 2026)
Grand Slam doubles results
Wimbledon	1R (2026)
Team competitions
Davis Cup	2–1
Medal record South American Games 2022 Asunción Mixed doubles Junior Pan American Games 2021 Cali-Valle Boys' doubles
Last updated on: 31 August 2026.

Adolfo Daniel Vallejo Álvarez (born 28 April 2004) is a Paraguayan professional tennis player. He has a career-high ATP singles ranking of world No. 60 achieved on 31 August 2026 and a doubles ranking of No. 435 achieved on 21 April 2025. He is currently the No. 1 singles player from Paraguay.

He reached an ITF junior combined ranking of world No. 1 on 15 August 2022.

Vallejo represents Paraguay at the Davis Cup, where he has a win–loss record of 5–3.

Career

2021-2022: Juniors

In 2021, Vallejo won the prestigious Orange Bowl in Plantation, United States, defeating American Bruno Kuzuhara in the final. He was the first Paraguayan player to win that event and only the second to reach the final after Víctor Pecci.

In January 2022, he was a runner-up in the boys' doubles category at the 2022 Australian Open, with American Alex Michelsen. The pair lost to second seeds Bruno Kuzuhara and Coleman Wong in the final.

2023-2024: Maiden ATP Challenger title

In July 2023, Vallejo reached his first final on the Challenger Tour in Santa Fe, Argentina, losing to Mariano Navone in the final. The following month, he won his first Challenger doubles title in Lima, Peru, partnering with Gonzalo Bueno, defeating Jorge Panta and Ignacio Buse in the final.

In March 2024, Vallejo won his first Challenger title in São Léopoldo, Brazil, defeating Enzo Couacaud in the final. He became the youngest Paraguayan to win an ATP Challenger title and the fourth Paraguayan champion in ATP Challenger Tour history and first since Ramon Delgado in 2009. As a result, he reached the top 300 on 6 May 2024.

2025: Two Challenger titles, top 150

In March 2025 ranked at a career-high of No. 187, achieved on 17 March 2025, Vallejo reached the semifinals at the home Challenger in Asunción, Paraguay but lost to eventual champion Emilio Nava. Following winning the 2025 Guayaquil Challenger, Vallejo reached the top 150 in the singles rankings at world No. 143 on 24 November 2025.

2026: Top 100, Grand Slam debut and first win

Vallejo began his year by winning two consecutive Challenger titles in Itajaí and Concepción. He reached a third final in the South American clay court swing in Brasília, but lost to Henrique Rocha.

Following a first round win at Houston, Vallejo made his debut in the world's top 100, becoming only the fourth Paraguayan player ever to do so, and the first since Ramón Delgado. In Madrid, Vallejo qualified to make his Masters 1000 debut, then defeated Grigor Dimitrov, becoming the second Paraguayan player after Delgado to win a match at Masters 1000 level, and 17th seed Learner Tien to advance to the third round, where he lost to Flavio Cobolli in straight sets. After this, he advanced to his fourth challenger tour final of the year in Valencia, losing to Miomir Kecmanović in 3 sets. At the French Open, Vallejo advanced to the second round after 20th seed Cameron Norrie was forced to retire midway through their match. He lost in the second round to Moïse Kouamé.

During an interview following the loss to Kouamé, Vallejo made controversial sexist remarks about chair umpire Ana Carvalho, arguing that female umpires and officials are unfit to umpire matches like his and Kouamé's due to the demanding crowd. He was quoted saying "This sort of match needs to be umpired by a man; it’s very difficult for a woman to do it". The French Open organizers released an official statement condemning Vallejo's actions, and he was subsequently fined €65,000 (equivalent to roughly US$75,000) for his remarks, the largest fine in Roland Garros history.

Performance timeline

Key

W

F

SF

QF

#R

RR

Q#

DNQ

A

NH

(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (DNQ) did not qualify; (A) absent; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.

Singles

Tournament	2025	2026	SR	W–L	Win%
Grand Slam tournaments
Australian Open	Q2	Q3	0 / 0	0–0	–
French Open	A	2R	0 / 1	1–1	50%
Wimbledon	A		0 / 0	0–0	–
US Open	A		0 / 0	0–0	–
Win–loss	0–0	0–0	0 / 0	0–0	–
ATP 1000 tournaments
Indian Wells Open	A	A	0 / 0	0–0	–
Miami Open	A	A	0 / 0	0–0	–
Monte-Carlo Masters	A	A	0 / 0	0–0	–
Madrid Open	A	3R	0 / 1	3–2	60%
Italian Open	A	Q1	0 / 0	0–0	–

ATP Challenger Tour finals

Singles: 11 (5 titles, 6 runner-ups)

Finals by surface
Hard (–)
Clay (5–6)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Jul 2023	Challenger Santa Fe, Argentina	Challenger	Clay	Mariano Navone	2–6, 4–6
Win	1–1	Mar 2024	São Léo Open, Brazil	Challenger	Clay	Enzo Couacaud	6–3, 6–2
Loss	1–2	Sep 2024	Antofagasta Challenger, Chile	Challenger	Clay	Juan Manuel Cerúndolo	6–3, 2–6, 4–6
Loss	1–3	Jan 2025	Challenger de Tigre, Argentina	Challenger	Clay	Juan Pablo Varillas	4–6, 4–6
Win	2–3	Oct 2025	Curitiba Challenger, Brazil	Challenger	Clay	Pedro Boscardin Dias	6–3, 7–5
Loss	2–4	Oct 2025	Costa do Sauípe Open, Brazil	Challenger	Clay	Román Andrés Burruchaga	1–6, 2–6
Win	3–4	Nov 2025	Challenger de Guayaquil, Ecuador	Challenger	Clay	Juan Pablo Varillas	7–5, 6–7(7–9), 6–3
Win	4–4	Jan 2026	Itajaí Open, Brazil	Challenger	Clay	Thiago Seyboth Wild	7–5, 4–6, 6–2
Win	5–4	Jan 2026	Challenger Concepción, Chile	Challenger	Clay	Alejandro Tabilo	6–2, 1–6, 6–1
Loss	5–5	Mar 2026	Brasília Tennis Open, Brazil	Challenger	Clay	Henrique Rocha	4–6, 4–6
Loss	5–6	May 2026	Copa Faulconbridge, Spain	Challenger	Clay	Miomir Kecmanović	2–6, 6–3, 2–6

Doubles: 1 (title)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Aug 2023	Lima Challenger, Peru	Challenger	Clay	Gonzalo Bueno	Jorge Panta Ignacio Buse	6–4, 6–2

ITF World Tennis Tour finals

Singles: 6 (4 titles, 2 runner-ups)

Finals by surface
Hard (1–1)
Clay (3–1)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Nov 2022	M15 Madrid, Spain	WTT	Hard	David Jordà Sanchis	3–6, 1–6
Loss	0–2	Jul 2023	M25 Rosario, Argentina	WTT	Clay	Juan Ignacio Londero	3–6, 2–6
Win	1–2	Aug 2024	M25 Idanha-a-Nova, Portugal	WTT	Hard	Alastair Gray	6–2, 6–3
Win	2–2	Feb 2025	M25 Punta del Este, Uruguay	WTT	Clay	Luciano Emanuel Ambrogi	6–1, 6–4
Win	3–2	Sep 2025	M25 Mar del Plata, Argentina	WTT	Clay	Lautaro Midón	7–6(7–4), 6–3
Win	4–2	Sep 2025	M25 Londrina, Brazil	WTT	Clay	Gustavo Heide	6–4, 4–6, 6–3

Doubles: 7 (5 titles, 2 runner-ups)

Finals by surface
Hard (4–1)
Clay (1–1)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Jul 2022	M15 Los Angeles, US	WTT	Hard	Ethan Quinn	Aidan Mayo Keenan Mayo	7–5, 6–4
Win	2–0	Jul 2022	M15 Fountain Valley, US	WTT	Hard	Ethan Quinn	Abraham Asaba Sekou Bangoura	6–0, 3–6, [10–8]
Loss	2–1	Dec 2022	M25 Trnava, Slovakia	WTT	Hard (i)	Daniel Rincón	Mats Hermans Mick Veldheer	6–1, 3–6, [8–10]
Win	3–1	Dec 2022	M15 Trnava, Slovakia	WTT	Hard (i)	Daniel Rincón	Abedallah Shelbayh Coleman Wong	6–4, 6–2
Win	4–1	Jan 2023	M15 Manacor, Spain	WTT	Hard	Daniel Rincón	Svyatoslav Gulin Ilya Snițari	6–4, 7–6(7–5)
Loss	4–2	Feb 2023	M15 Antalya, Turkey	WTT	Clay	Igor Gimenez	Matteo De Vincentis Arthur Reymond	6–7(5–7), 4–6
Win	5–2	May 2024	M25 Carnac, France	WTT	Clay	Federico Agustín Gómez	Christoph Negritu Alexander Merino	6–3, 7–5

Junior Grand Slam finals

Doubles: 1 (runner-up)

Result	Year	Tournament	Surface	Partner	Opponents	Score
Loss	2022	Australian Open	Hard	Alex Michelsen	Bruno Kuzuhara Coleman Wong	3–6, 6–7(3–7)

External links

• Daniel Vallejo at the Association of Tennis Professionals
• Daniel Vallejo at World Tennis
• Daniel Vallejo at the Davis Cup (archived former page)