2013 Gerry Weber Open – Singles

Tommy Haas was the defending champion but was knocked out by top seed Roger Federer in the semifinals. Federer won 6–7$(5–7)$, 6–3, 6–4 against Mikhail Youzhny to claim a record sixth title and his first since 2008.

Seeds
The top four seeds received a bye into the second round. • # Roger Federer (champion)

• # 🇫🇷 Richard Gasquet (semifinals)

• # 🇩🇪 Tommy Haas (semifinals)

• # 🇯🇵 Kei Nishikori (second round)

• # 🇨🇦 Milos Raonic (first round)

• # 🇩🇪 Philipp Kohlschreiber (quarterfinals)

• # 🇵🇱 Jerzy Janowicz (first round)

• # 🇩🇪 Florian Mayer (quarterfinals)

Seeds
The top three seeds received byes into the second round. • # Jimmy Wang (qualified)

• # Marco Chiudinelli (second round)

• # 🇺🇸 Alex Kuznetsov (second round)

• # 🇷🇺 Konstantin Kravchuk (second round)

• # Nikola Mektić (second round)

• # 🇧🇦 Mirza Bašić (qualifying competition)

• # 🇫🇷 Pierre-Hugues Herbert (second round)

• # 🇺🇦 Denys Molchanov (qualifying competition)

Qualifiers
• # Jimmy Wang

• # 🇨🇿 Jan Hernych

• # 🇮🇹 Riccardo Ghedin

• # 🇦🇹 Martin Fischer

Lucky losers

 * 1) 🇧🇦 Mirza Bašić