2018 Swiss Indoors – Singles

Roger Federer was the defending champion and successfully defended his title, defeating Marius Copil in the final, 7–6(7–5), 6–4.

Roger Federer won his ninth Swiss Indoors, 99th singles title and also reached the final the past 12 times he has played this event. By winning the title, his consecutive winning streak in his hometown tournament was extended to 20 matches.

Seeds
• # Roger Federer (champion)

• #🇩🇪 Alexander Zverev (semifinals)

• # Marin Čilić (second round)

• # Stefanos Tsitsipas (quarterfinals)

• #🇺🇸 Jack Sock (first round)

• #🇮🇹 Marco Cecchinato (first round)

• #🇷🇺 Daniil Medvedev (semifinals)

• #🇪🇸 Roberto Bautista Agut (quarterfinals)

Seeds
• # 🇷🇸 Dušan Lajović (qualifying competition, lucky loser)

• # 🇹🇳 Malek Jaziri (qualifying competition)

• # 🇫🇷 Benoît Paire (first round)

• # 🇯🇵 Taro Daniel (qualified)

• # 🇩🇪 Mischa Zverev (first round)

• # 🇨🇦 Vasek Pospisil (qualifying competition)

• # 🇺🇸 Mackenzie McDonald (qualifying competition)

• # 🇷🇸 Laslo Đere (qualified)

Qualifiers
• # 🇷🇴 Marius Copil

• # 🇷🇸 Laslo Đere

• # 🇦🇺 Alexei Popyrin

• # 🇯🇵 Taro Daniel

Lucky loser

 * 1) 🇷🇸 Dušan Lajović