2009 Copa Telmex – Singles

David Nalbandian was the defending champion, but lost in the semifinals to Juan Mónaco.

Tommy Robredo won in the final 7–5, 2–6, 7–6(7–5), against Juan Mónaco.

Seeds
• # 🇦🇷 David Nalbandian (semifinals)

• # 🇪🇸 Nicolás Almagro (first round)

• # 🇪🇸 Tommy Robredo (champion)

• # 🇪🇸 Carlos Moyá (first round)

• # 🇦🇷 José Acasuso (semifinals)

• # 🇪🇸 Albert Montañés (first round)

• # 🇪🇸 Marcel Granollers (second round)

• # 🇦🇷 Eduardo Schwank (first round)

Seeds
• # 🇦🇷 Brian Dabul (moved to the main draw)

• # 🇦🇷 Sergio Roitman (withdrew and placed into main draw)

• # 🇦🇷 Máximo González (qualified)

• # 🇦🇹 Daniel Köllerer (qualifying competition)

• # 🇪🇸 Rubén Ramírez Hidalgo (second round)

• # 🇪🇸 Santiago Ventura Bertomeu (qualifying competition)

• # 🇫🇷 Olivier Patience (first round)

• # Pablo Cuevas (qualified)

Qualifiers
• # 🇪🇸 Daniel Muñoz de la Nava

• # 🇧🇷 Franco Ferreiro

• # 🇦🇷 Máximo González

• # Pablo Cuevas