Daniel Vallejo

Daniel Vallejo
Vallejo in 2023
Full nameAdolfo Daniel Vallejo
Country (sports) Paraguay
Born (2004-04-28) 28 April 2004
Asunción, Paraguay
Height185 cm (6 ft 1 in)
PlaysRight-handed (two-handed backhand)
CoachAndres Schneiter
Prize moneyUS $346,801
Singles
Career record7–4 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles0
5 Challenger
Highest rankingNo. 101 (9 February 2026)
Current rankingNo. 101 (9 February 2026)
Grand Slam singles results
Australian OpenQ3 (2026)
Doubles
Career record1–3 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles0
1 Challenger
Highest rankingNo. 435 (21 April 2025)
Current rankingNo. 620 (9 February 2026)
Team competitions
Davis Cup2–1
Medal record
South American Games
2022 Asunción Mixed doubles
Junior Pan American Games
2021 Cali-Valle Boys' doubles
Last updated on: 9 February 2026.

Adolfo Daniel Vallejo (born 28 April 2004) is a Paraguayan professional tennis player. He has a career-high ATP singles ranking of No. 101 achieved on 9 February 2026 and a doubles ranking of No. 435 reached 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.