Martín Vassallo Argüello chose to not defend his 2008 title. Ramón Delgado won the tournament in his own country, after defeating Daniel Gimeno-Traver 7–6(2), 1–6, 6–3 in the final. Seeds Draw Final four Top half Bottom half References Main Draw Qualifying Draw Copa Petrobras Asuncion - Singles Copa Petrobras Asunción