2017 Stockholm Open – Singles

Juan Martín del Potro was the defending champion and successfully defended his title, defeating Grigor Dimitrov in the final, 6–4, 6–2.

Seeds
The top four seeds receive a bye into the second round. • #🇧🇬 Grigor Dimitrov (final)

• # Kevin Anderson (quarterfinals)

• #🇺🇸 Jack Sock (quarterfinals)

• #🇦🇷 Juan Martín del Potro (champion)

• #🇩🇪 Mischa Zverev (quarterfinals)

• #🇮🇹 Fabio Fognini (semifinals)

• #🇯🇵 Yūichi Sugita (quarterfinals)

• #🇪🇸 Fernando Verdasco (semifinals)

Seeds
• # 🇭🇺 Márton Fucsovics (qualified)

• # 🇸🇰 Lukáš Lacko (qualified)

• # 🇳🇴 Casper Ruud (first round)

• # 🇵🇱 Jerzy Janowicz (qualified)

• # 🇮🇹 Stefano Napolitano (first round)

• # 🇦🇷 Marco Trungelliti (first round)

• # 🇪🇪 Jürgen Zopp (qualifying competition, lucky loser)

• # 🇺🇸 Tim Smyczek (qualifying competition)

Qualifiers
• # 🇭🇺 Márton Fucsovics

• # 🇸🇰 Lukáš Lacko

• # 🇮🇹 Simone Bolelli

• # 🇵🇱 Jerzy Janowicz

Lucky losers

 * 1) 🇪🇪 Jürgen Zopp