Daniel Vallejo

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. 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.