Knokke CH 1990
Marcos Aurelio Gorriz won the title, beating Josef Cihak 7–5 2–6 6–1 in the final.
Main draw 32 players
- 1🇫🇷Fabrice SantoroRound of 32 · Lost to Raul Antonio Viver
- 2🇫🇷Thierry TulasneRound of 32 · Lost to Daniele Balducci
- 3🇪🇸Marcos Aurelio GorrizFinal · Champion
- 4🇳🇿Steve GuyRound of 16 · Lost to Filip Dewulf
- 5🇷🇺Andrei OlhovskiyRound of 32 · Lost to Josef Cihak
- 6🇩🇪Christian GeyerRound of 16 · Lost to Paul Dogger
- 7🇺🇦Dimitri PoliakovRound of 32 · Lost to German Lopez
- 8🇫🇷Eric WinogradskyRound of 32 · Lost to Thomas Buchmayer
- 🇨🇿Josef CihakFinal · Lost to Marcos Aurelio Gorriz
- 🇪🇸German LopezSemifinals · Lost to Marcos Aurelio Gorriz
- 🇧🇪Libor PimekSemifinals · Lost to Josef Cihak
- Q🇮🇹Daniele BalducciQuarterfinals · Lost to Libor Pimek
- WC🇧🇪Filip DewulfQuarterfinals · Lost to Josef Cihak
- Q🇳🇱Paul DoggerQuarterfinals · Lost to Marcos Aurelio Gorriz
- Q🇪🇨Raul Antonio ViverQuarterfinals · Lost to German Lopez
- 🇪🇸David De MiguelRound of 16 · Lost to Raul Antonio Viver
- 🇦🇷Francisco YunisRound of 16 · Lost to Marcos Aurelio Gorriz
- 🇪🇸Juan Carlos BaguenaRound of 16 · Lost to Daniele Balducci
- Q🇸🇪Patrik AlbertssonRound of 16 · Lost to Josef Cihak
- 🇫🇷Stephane GrenierRound of 16 · Lost to German Lopez
- 🇦🇹Thomas BuchmayerRound of 16 · Lost to Libor Pimek
- 🇸🇪Christer AllgardhRound of 32 · Lost to Marcos Aurelio Gorriz
- WCIRIMansour BahramiRound of 32 · Lost to Steve Guy
- 🇦🇹Oliver FuchsRound of 32 · Lost to David De Miguel
- 🇫🇮Olli RahnastoRound of 32 · Lost to Libor Pimek
- 🇫🇷Philippe PechRound of 32 · Lost to Juan Carlos Baguena
- 🇦🇷Roberto ArguelloRound of 32 · Lost to Stephane Grenier
- 🇳🇱Sander GroenRound of 32 · Lost to Francisco Yunis
- 🇮🇱Shahar PerkissRound of 32 · Lost to Christian Geyer
- 🇫🇷Stephane SansoniRound of 32 · Lost to Patrik Albertsson
- WC🇧🇪Steve CornelissenRound of 32 · Lost to Paul Dogger
- 🇧🇪Xavier DaufresneRound of 32 · Lost to Filip Dewulf