Daniel Vallejo
Paraguayan tennis player (born 2004)
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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. 70 achieved on 18 May 2026 and a doubles ranking of No. 435 achieved on 21 April 2025. He is currently the No. 1 singles player from Paraguay.[2]
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Vallejo in 2023 | |
| Full name | Adolfo Daniel Vallejo Álvarez |
|---|---|
| Country (sports) |  Paraguay |
| Born | 28 April 2004[1] Asunción, Paraguay |
| Height | 1.85 m (6 ft 1 in) |
| Plays | Right-handed (two-handed backhand) |
| Coach | Andrés Schneiter |
| Prize money | US $502,556 |
| Singles | |
| Career record | 13–7 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 0 5 Challenger |
| Highest ranking | No. 70 (18 May 2026) |
| Current ranking | No. 70 (18 May 2026) |
| Grand Slam singles results | |
| Australian Open | Q3 (2026) |
| French Open | 2R (2026) |
| Doubles | |
| Career record | 2–3 (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. 706 (18 May 2026) |
| Team competitions | |
| Davis Cup | 2–1 |
| Last updated on: 18 May 2026. | |
He reached an ITF junior combined ranking of world No. 1 on 15 August 2022.[3]
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.[4][5] 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.[6] Following winning the 2025 Guayaquil Challenger, Vallejo reached the top 150 in the singles rankings at world No. 143 on 24 November 2025.[7]
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[8], 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.
In May 2026, after losing to French tennis player Moïse Kouamé, Vallejo made controversial remarks —deemed sexist by international media—, arguing that matches like this should be officiated by a man because it was very difficult for a woman, and that a male referee was necessary because the crowd was very demanding and it took a lot of strength to handle them.[9][10] The tournament's organization released a statement, condemning Vallejo's words, supporting all referees and staff, and stating that the player will receive a fine as penalty.[11]
Performance timeline
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |
Singles
| Tournament | 2025 | 2026 | SR | W–L | Win% | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Grand Slam tournaments | ||||||||||
| Australian Open | Q2 | Q3 | 0 / 0 | 0–0 | – | |||||
| French Open | A | 2R | 0 / 0 | 0–0 | – | |||||
| 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)
|
|
| 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)
|
|
| 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)
|
|
| 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) |
