2018 Poznań Open – Singles

Alexey Vatutin was the defending champion but lost in the quarterfinals to Hubert Hurkacz.

Hurkacz won the title after defeating Taro Daniel 6–1, 6–1 in the final.

Seeds
• # 🇯🇵 Taro Daniel (final)

• # 🇦🇷 Guido Andreozzi (first round)

• # 🇸🇰 Martin Kližan (second round)

• # Pedro Sousa (first round)

• # 🇪🇸 Marcel Granollers (second round)

• # 🇫🇷 Quentin Halys (semifinals)

• # Henri Laaksonen (second round)

• # 🇷🇺 Alexey Vatutin (quarterfinals)