2023 Sofia Open – Singles

Adrian Mannarino defeated Jack Draper in the final, 7–6(8–6), 2–6, 6–3 to win the singles tennis title at the 2023 Sofia Open. It was his third ATP Tour singles title of the season and the fifth of his career.

Marc-Andrea Hüsler was the defending champion, but lost in the first round to Billy Harris after qualifying into the main draw.

Seeds
The top four seeds received a bye into the second round. • #🇮🇹 Lorenzo Musetti (second round)

• #🇫🇷 Adrian Mannarino (champion)

• #🇩🇪 Jan-Lennard Struff (semifinals)

• #🇦🇷 Sebastián Báez (second round, retired)

• #🇦🇺 Alexei Popyrin (withdrew)

• #🇦🇺 Max Purcell (second round)

• #🇦🇹 Sebastian Ofner (quarterfinals)

• #🇭🇺 Márton Fucsovics (quarterfinals)

• #🇷🇸 Miomir Kecmanović (first round)

Seeds
• # 🇫🇷 Térence Atmane (qualified)

• # 🇺🇸 Nicolas Moreno de Alboran (qualifying competition, lucky loser)

• # 🇺🇦 Vitaliy Sachko (qualified)

• # Marc-Andrea Hüsler (qualified)

• # 🇺🇦 Illya Marchenko (qualifying competition)

• # 🇮🇹 Francesco Passaro (qualifying competition)

• # 🇧🇦 Nerman Fatić (qualifying competition)

• # 🇬🇧 Billy Harris (qualified)

Qualifiers
• # 🇫🇷 Térence Atmane

• # 🇬🇧 Billy Harris

• # 🇺🇦 Vitaliy Sachko

• # Marc-Andrea Hüsler

Lucky loser
• # 🇺🇸 Nicolas Moreno de Alboran