2017 St. Petersburg Open – Singles

Alexander Zverev was the defending champion, but chose not to participate this year.

Damir Džumhur won his first ATP World Tour title, defeating Fabio Fognini in the final, 3–6, 6–4, 6–2. Džumhur became the first player from Bosnia and Herzegovina to win the ATP title.

Seeds
The top four seeds receive a bye into the second round. • #🇪🇸 Roberto Bautista Agut (semifinals)

• #🇫🇷 Jo-Wilfried Tsonga (quarterfinals)

• #🇮🇹 Fabio Fognini (final)

• #🇫🇷 Adrian Mannarino (second round)

• #🇩🇪 Philipp Kohlschreiber (second round, withdrew)

• #🇮🇹 Paolo Lorenzi (first round)

• #🇷🇸 Viktor Troicki (quarterfinals)

• #🇩🇪 Jan-Lennard Struff (semifinals)

Seeds
• # 🇲🇩 Radu Albot (qualifying competition, lucky loser)

• # 🇦🇺 John-Patrick Smith (qualified)

• # 🇷🇺 Alexey Vatutin (qualifying competition)

• # Ernests Gulbis (qualified)

• # 🇷🇺 Teymuraz Gabashvili (first round)

• # 🇬🇧 Liam Broady (qualified)

• # 🇨🇿 Petr Michnev (first round)

• # 🇷🇸 Peđa Krstin (first round)

Qualifiers
• # 🇬🇧 Liam Broady

• # 🇦🇺 John-Patrick Smith

• # 🇩🇪 Daniel Masur

• # Ernests Gulbis

Lucky loser

 * 1) 🇲🇩 Radu Albot