2019 Sofia Open – Singles

Mirza Bašić was the defending champion but lost in the first round to Martin Kližan.

Daniil Medvedev won the title, defeating Márton Fucsovics in the final, 6–4, 6–3.

Seeds
The top four seeds received a bye into the second round. • #🇷🇺 Karen Khachanov (second round)

• # Stefanos Tsitsipas (quarterfinals)

• #🇷🇺 Daniil Medvedev (champion)

• #🇪🇸 Roberto Bautista Agut (quarterfinals, withdrew)

• # Nikoloz Basilashvili (first round)

• #🇪🇸 Fernando Verdasco (quarterfinals)

• #🇫🇷 Gaël Monfils (semifinals)

• #🇮🇹 Andreas Seppi (first round)

Seeds
• # 🇩🇪 Yannick Maden (qualified)

• # 🇮🇹 Stefano Travaglia (qualified)

• # 🇸🇰 Lukáš Lacko (first round)

• # 🇺🇦 Sergiy Stakhovsky (qualifying competition)

• # 🇮🇹 Luca Vanni (qualifying competition)

• # 🇵🇱 Kamil Majchrzak (first round)

• # 🇧🇾 Egor Gerasimov (qualifying competition)

• # 🇮🇹 Salvatore Caruso (first round)

Qualifiers
• # 🇩🇪 Yannick Maden

• # 🇮🇹 Stefano Travaglia

• # 🇧🇬 Alexandar Lazarov

• # 🇩🇪 Daniel Brands