2018 BMW Open – Singles

Alexander Zverev was the defending champion and successfully defended his title, defeating Philipp Kohlschreiber in the final, 6–3, 6–3.

Seeds
The top four seeds received a bye into the second round. • #🇩🇪 Alexander Zverev (champion)

• #🇪🇸 Roberto Bautista Agut (quarterfinals)

• #🇦🇷 Diego Schwartzman (second round)

• #🇰🇷 Chung Hyeon (semifinals)

• #🇮🇹 Fabio Fognini (first round)

• #🇩🇪 Philipp Kohlschreiber (final)

• #🇫🇷 Gaël Monfils (first round)

• #🇯🇵 Yūichi Sugita (first round)

Seeds
• # 🇷🇴 Marius Copil (qualified)

• # 🇪🇪 Jürgen Zopp (first round)

• # 🇷🇺 Alexey Vatutin (first round)

• # 🇸🇰 Martin Kližan (qualified)

• # 🇸🇰 Jozef Kovalík (qualifying competition)

• # 🇸🇰 Norbert Gombos (qualifying competition)

• # 🇸🇰 Andrej Martin (qualifying competition)

• # 🇩🇪 Dustin Brown (qualified)

Qualifiers
• # 🇷🇴 Marius Copil

• # 🇩🇪 Dustin Brown

• # 🇩🇪 Daniel Masur

• # 🇸🇰 Martin Kližan