2003 Davidoff Swiss Indoors – Singles

David Nalbandian was the defending champion but lost the final on a walkover against Guillermo Coria.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.


 * 1) 🇺🇸 Andy Roddick (semifinals)
 * 2)  Roger Federer (second round)
 * 3) 🇦🇷 Guillermo Coria (champion)
 * 4) 🇦🇷 David Nalbandian (final, withdrew because of a left wrist injury)
 * 5) 🇨🇿 Jiří Novák (second round)
 * 6) 🇦🇺 Mark Philippoussis (withdrew)
 * 7)  Martin Verkerk (first round)
 * 8) 🇪🇸 Tommy Robredo (second round)

Draw

 * NB: The Final was the best of 5 sets while all other rounds were the best of 3 sets.