2003 Idea Prokom Open – Men's singlesJosé Acasuso was the defending champion but did not compete that year.Guillermo Coria won in the final 7-5, 6-1 against David Ferrer.SeedsA champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. Juan Carlos Ferrero ' Carlos Moyá ' Guillermo Coria David Nalbandian ' Filippo Volandri ' David Sánchez ' Dominik Hrbatý ' Olivier Mutis ''''