2017 Città di Caltanissetta – Singles

Paolo Lorenzi was the defending champion and successfully defended his title, defeating Alessandro Giannessi 6–4, 6–2 in the final.

Seeds
• # 🇮🇹 Paolo Lorenzi (champion)

• # 🇷🇸 Dušan Lajović (first round)

• # 🇰🇿 Mikhail Kukushkin (quarterfinals)

• # 🇲🇩 Radu Albot (semifinals)

• # 🇦🇷 Facundo Bagnis (second round)

• # 🇮🇹 Marco Cecchinato (quarterfinals)

• # 🇮🇹 Alessandro Giannessi (final)

• # 🇺🇸 Tennys Sandgren (quarterfinals)