2020 Sofia Open – Singles

Jannik Sinner defeated Vasek Pospisil in the final, 6–4, 3–6, 7–6(7–3) to win the singles tennis title at the 2020 Sofia Open. It was his first ATP Tour title.

Daniil Medvedev was the reigning champion, but chose not to defend his title.

Seeds
The top four seeds received a bye into the second round. • #🇨🇦 Denis Shapovalov (second round)

• #🇨🇦 Félix Auger-Aliassime (second round)

• #🇦🇺 Alex de Minaur (quarterfinals)

• #🇩🇪 Jan-Lennard Struff (second round)

• #🇫🇷 Adrian Mannarino (semifinals)

• #🇦🇺 John Millman (quarterfinals)

• # Nikoloz Basilashvili (first round)

• # Marin Čilić (first round)

Seeds
• # 🇫🇷 Gilles Simon (qualified)

• # 🇯🇵 Yūichi Sugita (moved to main draw)

• # 🇷🇺 Aslan Karatsev (qualified)

• # 🇯🇵 Taro Daniel (qualified)

• # 🇷🇺 Evgeny Donskoy (first round)

• # 🇸🇰 Jozef Kovalík (first round)

• # 🇸🇰 Martin Kližan (qualifying competition, lucky loser)

• # Marc-Andrea Hüsler (qualifying competition, lucky loser)

Qualifiers
• # 🇫🇷 Gilles Simon

• # 🇷🇸 Viktor Troicki

• # 🇷🇺 Aslan Karatsev

• # 🇯🇵 Taro Daniel

Lucky losers
• # 🇺🇦 Illya Marchenko

• # 🇸🇰 Martin Kližan

• # Marc-Andrea Hüsler