San Marino 1990
Guillermo Perez Roldan won the title, beating Omar Camporese 6–3 6–3 in the final.
Main draw 32 players
- 1🇦🇷Guillermo Perez RoldanFinal · Champion
- 2🇦🇹Horst SkoffRound of 16 · Lost to Nicklas Kulti
- 3🇺🇾Marcelo FilippiniSemifinals · Lost to Guillermo Perez Roldan
- 4🇦🇷Franco DavinQuarterfinals · Lost to Omar Camporese
- 5🇭🇷Goran PrpicRound of 16 · Lost to Pablo Arraya
- 6🇮🇹Omar CamporeseFinal · Lost to Guillermo Perez Roldan
- 7🇦🇷Roberto AzarRound of 32 · Lost to Renzo Furlan
- 8🇮🇹Paolo CaneRound of 16 · Lost to Paul Vojtischek
- 🇸🇪Nicklas KultiSemifinals · Lost to Omar Camporese
- 🇵🇪Pablo ArrayaQuarterfinals · Lost to Marcelo Filippini
- 🇩🇪Paul VojtischekQuarterfinals · Lost to Nicklas Kulti
- 🇮🇹Renzo FurlanQuarterfinals · Lost to Guillermo Perez Roldan
- 🇫🇷Cedric PiolineRound of 16 · Lost to Omar Camporese
- 🇪🇸Francisco ClavetRound of 16 · Lost to Renzo Furlan
- 🇪🇸Jose Francisco AlturRound of 16 · Lost to Marcelo Filippini
- Q🇮🇹Paolo PambiancoRound of 16 · Lost to Guillermo Perez Roldan
- 🇫🇷Thierry TulasneRound of 16 · Lost to Franco Davin
- Q🇨🇭Claudio MezzadriRound of 32 · Lost to Goran Prpic
- 🇮🇹Claudio PistolesiRound of 32 · Lost to Pablo Arraya
- LL🇮🇹Ettore RossettiRound of 32 · Lost to Paolo Cane
- WC🇮🇹Federico MordeganRound of 32 · Lost to Horst Skoff
- 🇪🇸Fernando LunaRound of 32 · Lost to Thierry Tulasne
- WC🇮🇹Francesco CancellottiRound of 32 · Lost to Franco Davin
- 🇺🇸Jimmy BrownRound of 32 · Lost to Paolo Pambianco
- 🇵🇹Joao Cunha SilvaRound of 32 · Lost to Marcelo Filippini
- 🇸🇪Lars JonssonRound of 32 · Lost to Cedric Pioline
- 🇪🇸Marcos Aurelio GorrizRound of 32 · Lost to Francisco Clavet
- Q🇮🇹Massimo BoscattoRound of 32 · Lost to Jose Francisco Altur
- 🇮🇹Massimo CierroRound of 32 · Lost to Guillermo Perez Roldan
- Q🇮🇹Nicola BrunoRound of 32 · Lost to Omar Camporese
- 🇵🇹Nuno MarquesRound of 32 · Lost to Paul Vojtischek
- 🇮🇹Stefano PescosolidoRound of 32 · Lost to Nicklas Kulti