2018 Guzzini Challenger – Singles

Viktor Galović was the defending champion but lost in the semifinals to Adrián Menéndez Maceiras.

Daniel Brands won the title after defeating Menéndez Maceiras 7–5, 6–3 in the final.

Seeds
• # 🇮🇳 Ramkumar Ramanathan (first round)

• # 🇧🇾 Ilya Ivashka (quarterfinals)

• # 🇫🇷 Quentin Halys (first round)

• # 🇰🇿 Alexander Bublik (first round)

• # 🇪🇸 Adrián Menéndez Maceiras (final)

• # Viktor Galović (semifinals)

• # 🇮🇹 Salvatore Caruso (quarterfinals)

• # 🇯🇵 Hiroki Moriya (quarterfinals)