2009 SAP Open – Singles

Andy Roddick was the defending champion, but lost to Radek Štěpánek in the semifinals.

Seeds
• # 🇺🇸 Andy Roddick (semifinals)

• # 🇦🇷 Juan Martín del Potro (quarterfinals)

• # 🇺🇸 James Blake (semifinals)

• # 🇨🇿 Radek Štěpánek (champion)

• # 🇺🇸 Mardy Fish (final)

• # 🇺🇸 Sam Querrey (quarterfinals)

• # 🇷🇺 Igor Kunitsyn (first round)

• # 🇺🇸 Robby Ginepri (first round)

Seeds
• # 🇺🇸 Robert Kendrick (second round)

• # 🇯🇵 Go Soeda (first round)

• # 🇺🇸 Donald Young (second round)

• # 🇮🇳 Somdev Devvarman (second round)

• # 🇧🇪 Xavier Malisse (first round)

• # 🇧🇷 Ricardo Mello (qualifying competition, lucky loser)

• # 🇨🇦 Peter Polansky (first round)

• # 🇮🇹 Andrea Stoppini (qualified)

Qualifiers
• # 🇩🇪 Dominik Meffert

• # 🇮🇹 Andrea Stoppini

• # 🇸🇪 Michael Ryderstedt

• # 🇺🇸 Todd Widom

Lucky losers
• # 🇧🇷 Ricardo Mello

• # Ramón Delgado