Banja Luka CH 2003
Mario Radic won the title, beating Frantisek Cermak 6–4 6–3 in the final.
Main draw 32 players
- 1🇦🇷Sergio RoitmanRound of 32 · Lost to Paolo Lorenzi
- 2🇪🇸Salvador NavarroRound of 32 · Lost to Francesco Aldi
- 3🇩🇪Daniel ElsnerQuarterfinals · Lost to Roko Karanusic
- 4CRCJuan Antonio MarinQuarterfinals · Lost to Mario Radic
- 5🇭🇷Roko KaranusicSemifinals · Lost to Frantisek Cermak
- 6🇪🇸Oscar SerranoSemifinals · Lost to Mario Radic
- 7🇦🇷Juan Pablo GuzmanRound of 32 · Lost to Mario Radic
- 8🇦🇷Andres DellatorreQuarterfinals · Lost to Frantisek Cermak
- 🇭🇷Mario RadicFinal · Champion
- 🇨🇿Frantisek CermakFinal · Lost to Mario Radic
- Q🇪🇸Emilio Benfele AlvarezQuarterfinals · Lost to Oscar Serrano
- 🇮🇹Francesco AldiRound of 16 · Lost to Emilio Benfele Alvarez
- 🇪🇸Gorka FraileRound of 16 · Lost to Andres Dellatorre
- 🇷🇴Ion MoldovanRound of 16 · Lost to Roko Karanusic
- WC🇭🇷Ivan DodigRound of 16 · Lost to Juan Antonio Marin
- 🇦🇷Mariano DelfinoRound of 16 · Lost to Oscar Serrano
- 🇮🇹Paolo LorenziRound of 16 · Lost to Frantisek Cermak
- Q🇷🇸Vladimir PavicevicRound of 16 · Lost to Daniel Elsner
- 🇰🇿Yuri SchukinRound of 16 · Lost to Mario Radic
- WC🇧🇦Aleksandar MaricRound of 32 · Lost to Emilio Benfele Alvarez
- Q🇭🇷Daniel KrajnovicRound of 32 · Lost to Roko Karanusic
- 🇪🇸Didac PerezRound of 32 · Lost to Andres Dellatorre
- 🇦🇷Diego VeronelliRound of 32 · Lost to Daniel Elsner
- 🇮🇹Federico LuzziRound of 32 · Lost to Juan Antonio Marin
- 🇪🇸Guillermo Garcia LopezRound of 32 · Lost to Frantisek Cermak
- Q🇦🇹Herbert WiltschnigRound of 32 · Lost to Gorka Fraile
- WC🇧🇦Igor RacicRound of 32 · Lost to Oscar Serrano
- 🇩🇪Jakub Herm ZahlavaRound of 32 · Lost to Mariano Delfino
- 🇸🇰Ladislav SvarcRound of 32 · Lost to Yuri Schukin
- 🇮🇹Simone VagnozziRound of 32 · Lost to Ion Moldovan
- LL🇦🇺Steven RandjelovicRound of 32 · Lost to Vladimir Pavicevic
- WC🇧🇦Zlatan KadricRound of 32 · Lost to Ivan Dodig