Daniel Vallejo
Vallejo in 2023 | |
| Full name | Adolfo Daniel Vallejo |
|---|---|
| Country (sports) | Paraguay |
| Born | 28 April 2004[1] Asunción, Paraguay |
| Plays | Right-handed (two-handed backhand) |
| Prize money | US $245,983 |
| Singles | |
| Career record | 7–4 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 3 Challenger |
| Highest ranking | No. 143 (24 November 2025) |
| Current ranking | No. 143 (24 November 2025) |
| Grand Slam singles results | |
| Australian Open | Q2 (2025) |
| Doubles | |
| Career record | 1–3 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 0 |
| Highest ranking | No. 435 (21 April 2025) |
| Current ranking | No. 639 (24 November 2025) |
| Team competitions | |
| Davis Cup | 2–1 |
Medal record | |
| Last updated on: 24 November 2025. | |
Adolfo Daniel Vallejo (born 28 April 2004) is a Paraguayan professional tennis player. He has a career-high ATP singles ranking of world No. 143 achieved on 24 November 2025 and a doubles ranking of No. 435 achieved on 21 April 2025. He is currently the No. 1 singles player from Paraguay.[2]
On the ITF Junior Circuit, Vallejo reached a 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 Junior Orange Bowl in Plantation, Florida, defeating Bruno Kuzuhara in the final. He was the first Paraguayan player to win the tournament and only the second to reach the final after Víctor Pecci.
In 2022, Vallejo reached the final of the Australian Open in boys doubles, partnering with Alex Michelsen, losing in the final to Bruno Kuzuhara and Coleman Wong.
2023: Maiden ATP Challenger doubles 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.
2024-2025: Challenger title and top 150 in singles
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.
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]
ATP Challenger Tour finals
Singles: 7 (3 titles, 4 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 | Copa Internacional de Tênis, 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 |
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) |
References
- ^ "Adolfo Daniel Vallejo". www.atptour.com.
- ^ "Paraguay | ATP Rankings (Singles)". ATP Tour.
- ^ "Djokovic & Medvedev Inspired Former Junior World No. 1 Vallejo In Turin". 4 February 2023.
- ^ "Vallejo, 19, makes Challenger history; Nardi wins in Napoli". 2 April 2024.
- ^ "Vallejo's journey from junior Orange Bowl to #NextGenATP contender". 26 April 2024.
- ^ "EMILIO NAVA SE CORONA CAMPEÓN DEL ATP CHALLENGER 75 PARAGUAY OPEN" (in Spanish). Tenis Al Maximo. Retrieved 24 March 2025.
- ^ "Sakamoto, 19, secures Challenger title at home". ATPTour. 24 November 2025.