San Luis Potosi CH 1990
Ricki Osterthun won the title, beating Malivai Washington 6–4 6–4 in the final.
Main draw 32 players
- 1🇸🇪Christian BergstromQuarterfinals · Lost to Leonardo Lavalle
- 2CUBMario TabaresRound of 32 · Lost to Philip Johnson
- 3🇦🇺Broderick DykeRound of 16 · Lost to Hendrik Jan Davids
- 4🇺🇸Malivai WashingtonFinal · Lost to Ricki Osterthun
- 5🇩🇪Andres VysandRound of 32 · Lost to Scott Warner
- 6🇦🇺Peter DoohanRound of 32 · Lost to Agustin Moreno
- 7🇲🇽Leonardo LavalleSemifinals · Lost to Ricki Osterthun
- 8🇩🇪Peter BallauffRound of 32 · Lost to Carl Limberger
- 🇩🇪Ricki OsterthunFinal · Champion
- 🇺🇸Philip JohnsonSemifinals · Lost to Malivai Washington
- 🇦🇺Carl LimbergerQuarterfinals · Lost to Philip Johnson
- 🇳🇱Hendrik Jan DavidsQuarterfinals · Lost to Ricki Osterthun
- 🇺🇸Scott WarnerQuarterfinals · Lost to Malivai Washington
- WC🇲🇽Agustin MorenoRound of 16 · Lost to Ricki Osterthun
- 🇵🇪Alejandro AramburuRound of 16 · Lost to Malivai Washington
- 🇦🇹Gilbert SchallerRound of 16 · Lost to Scott Warner
- WC🇲🇽Luis HerreraRound of 16 · Lost to Christian Bergstrom
- WC🇲🇽Oliver FernandezRound of 16 · Lost to Philip Johnson
- Q🇲🇽Roberto LopezRound of 16 · Lost to Carl Limberger
- Q🇸🇪Ville JanssonRound of 16 · Lost to Leonardo Lavalle
- 🇺🇸Buff FarrowRound of 32 · Lost to Broderick Dyke
- WC🇲🇽Francisco MacielRound of 32 · Lost to Luis Herrera
- 🇩🇪Hans SchwaierRound of 32 · Lost to Malivai Washington
- 🇲🇽Jorge LozanoRound of 32 · Lost to Alejandro Aramburu
- 🇪🇸Juan Carlos BaguenaRound of 32 · Lost to Oliver Fernandez
- CUBJuan PinoRound of 32 · Lost to Ville Jansson
- 🇪🇸Marcos Aurelio GorrizRound of 32 · Lost to Roberto Lopez
- 🇦🇷Pablo AlbanoRound of 32 · Lost to Hendrik Jan Davids
- 🇵🇪Pablo ArrayaRound of 32 · Lost to Leonardo Lavalle
- Q🇲🇽Pedro AlatorreRound of 32 · Lost to Gilbert Schaller
- Q🇲🇽Stefan DallwitzRound of 32 · Lost to Christian Bergstrom
- 🇺🇸Steve DevriesRound of 32 · Lost to Ricki Osterthun