2009 San Luis Potosí Challenger – Singles

Brian Dabul chose to not defend his 2008 title.

Santiago Giraldo defeated Paolo Lorenzi in the final 6–2, 6–7(3), 6–2.

Seeds
• # 🇦🇷 Horacio Zeballos (quarterfinals)

• # 🇨🇴 Santiago Giraldo (champion)

• # 🇧🇷 Franco Ferreiro (quarterfinals)

• # 🇦🇷 Mariano Puerta (semifinals)

• # 🇨🇴 Alejandro Falla (first round)

• # Michael Lammer (second round)

• # 🇲🇽 Santiago González (semifinals)

• # 🇮🇹 Paolo Lorenzi (final)