2003 Generali Open – Singles

Àlex Corretja was the defending champion but lost in the second round to Werner Eschauer.

Guillermo Coria won in the final 6–1, 6–4, 6–2 against Nicolás Massú.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. All sixteen seeds received a bye to the second round.


 * 1) 🇪🇸 Juan Carlos Ferrero (quarterfinals)
 * 2) 🇦🇷 Guillermo Coria (champion)
 * 3) 🇩🇪 Rainer Schüttler (second round)
 * 4) 🇪🇸 Albert Costa (second round)
 * 5) 🇲🇦 Younes El Aynaoui (third round)
 * 6) 🇷🇺 Mikhail Youzhny (second round)
 * 7) 🇦🇷 Gastón Gaudio (quarterfinals)
 * 8) 🇦🇷 Juan Ignacio Chela (quarterfinals)
 * 9) 🇦🇷 Mariano Zabaleta (semifinals)
 * 10) 🇧🇾 Max Mirnyi (third round)
 * 11) 🇷🇺 Nikolay Davydenko (third round)
 * 12) 🇪🇸 Àlex Corretja (second round)
 * 13) 🇪🇸 Feliciano López (semifinals)
 * 14) 🇦🇲 Sargis Sargsian (third round)
 * 15) 🇧🇷 Flávio Saretta (third round)
 * 16) 🇪🇸 David Sánchez (second round)