2020 Sánchez-Casal Cup – Singles

Salvatore Caruso was the defending champion and chose not to defend his title.

Carlos Alcaraz won the title after defeating Damir Džumhur 4–6, 6–2, 6–1 in the final.

Seeds
• # 🇪🇸 Jaume Munar (quarterfinals)

• # 🇦🇺 Christopher O'Connell (second round, retired)

• # Pedro Sousa (first round)

• # 🇧🇦 Damir Džumhur (final)

• # 🇦🇷 Facundo Bagnis (quarterfinals)

• # 🇺🇸 Bradley Klahn (withdrew)

• # 🇪🇸 Bernabé Zapata Miralles (first round)

• # 🇪🇸 Carlos Taberner (first round)