2013 Swiss Indoors – Singles

Juan Martín del Potro was the defending champion and successfully defended his title, defeating Roger Federer in the final, 7–6(7–3), 2–6, 6–4.

Roger Federer became only the second man in the Open Era to reach the final of an event 10 times, a record he shared at the time with Guillermo Vilas.

Seeds
• # 🇦🇷 Juan Martín del Potro (champion)

• # 🇨🇿 Tomáš Berdych (first round)

• # Roger Federer (final)

• # Stanislas Wawrinka (first round)

• # 🇫🇷 Richard Gasquet (first round)

• # 🇯🇵 Kei Nishikori (second round)

• # 🇮🇹 Andreas Seppi (first round)

• # 🇧🇬 Grigor Dimitrov (quarterfinals)

Seeds
• # 🇩🇪 Benjamin Becker (qualified)

• # 🇩🇪 Tobias Kamke (qualified)

• # 🇺🇸 Michael Russell (first round)

• # 🇺🇸 Denis Kudla (qualified)

• # 🇺🇸 Jack Sock (qualifying competition)

• # 🇺🇦 Sergiy Stakhovsky (qualifying competition)

• # 🇫🇷 Paul-Henri Mathieu (qualified)

• # 🇦🇹 Andreas Haider-Maurer (qualifying competition)

Qualifiers
• # 🇩🇪 Benjamin Becker

• # 🇩🇪 Tobias Kamke

• # 🇫🇷 Paul-Henri Mathieu

• # 🇺🇸 Denis Kudla