2018 Erste Bank Open – Singles

Lucas Pouille was the defending champion but lost to Borna Ćorić in the second round.

Kevin Anderson won the title, defeating Kei Nishikori in the final, 6–3, 7–6(7–3). Anderson saved a match point in his opening round match against Nikoloz Basilashvili.

This was Nishikori's ninth consecutive defeat in ATP World Tour level finals. His most recent victory came in February 2016 at Memphis.

Seeds
• #🇦🇹 Dominic Thiem (quarterfinals)

• # Kevin Anderson (champion)

• #🇧🇬 Grigor Dimitrov (first round)

• #🇺🇸 John Isner (second round)

• #🇯🇵 Kei Nishikori (final)

• # Borna Ćorić (quarterfinals, retired)

• #🇮🇹 Fabio Fognini (second round)

• #🇬🇧 Kyle Edmund (second round)

Seeds
• # 🇫🇷 Pierre-Hugues Herbert (qualified)

• # 🇺🇸 Denis Kudla (qualified)

• # 🇦🇷 Guido Pella (qualifying competition)

• # 🇰🇿 Mikhail Kukushkin (qualified)

• # 🇷🇺 Andrey Rublev (qualifying competition, lucky loser)

• # 🇬🇧 Cameron Norrie (qualifying competition, lucky loser)

• # 🇺🇸 Bradley Klahn (first round)

• # 🇧🇪 Ruben Bemelmans (qualified)

Qualifiers
• # 🇫🇷 Pierre-Hugues Herbert

• # 🇺🇸 Denis Kudla

• # 🇧🇪 Ruben Bemelmans

• # 🇰🇿 Mikhail Kukushkin

Lucky losers
• # 🇷🇺 Andrey Rublev

• # 🇬🇧 Cameron Norrie