Estoril Open 1990
Emilio Sanchez won the title, beating Franco Davin 6–3 6–1 in the final.
Main draw 32 players
- 1🇺🇸Jay BergerQuarterfinals · Lost to Jordi Arrese
- 2🇦🇷Martin JaiteRound of 32 · Lost to Paul Haarhuis
- 3🇪🇸Emilio SanchezFinal · Champion
- 4🇪🇨Andres GomezRound of 32 · Lost to Juan Aguilera
- 5🇦🇹Thomas MusterQuarterfinals · Lost to Juan Aguilera
- 6🇵🇪Jaime YzagaRound of 32 · Lost to Karel Novacek
- 7🇦🇷Guillermo Perez RoldanRound of 32 · Lost to Andrei Cherkasov
- 8🇪🇸Sergi BrugueraRound of 16 · Lost to Franco Davin
- 🇦🇷Franco DavinFinal · Lost to Emilio Sanchez
- 🇪🇸Jordi ArreseSemifinals · Lost to Emilio Sanchez
- 🇪🇸Juan AguileraSemifinals · Lost to Franco Davin
- 🇮🇹Omar CamporeseQuarterfinals · Lost to Emilio Sanchez
- 🇳🇱Paul HaarhuisQuarterfinals · Lost to Franco Davin
- 🇷🇺Andrei CherkasovRound of 16 · Lost to Jordi Arrese
- Q🇫🇷Fabrice SantoroRound of 16 · Lost to Thomas Muster
- 🇭🇷Goran PrpicRound of 16 · Lost to Paul Haarhuis
- 🇨🇿Karel NovacekRound of 16 · Lost to Omar Camporese
- 🇮🇹Paolo CaneRound of 16 · Lost to Juan Aguilera
- 🇺🇸Ronald AgenorRound of 16 · Lost to Jay Berger
- 🇪🇸Tomas CarbonellRound of 16 · Lost to Emilio Sanchez
- Q🇪🇸Francisco ClavetRound of 32 · Lost to Jordi Arrese
- 🇪🇸Javier SanchezRound of 32 · Lost to Ronald Agenor
- 🇫🇷Jean Philippe FleurianRound of 32 · Lost to Tomas Carbonell
- 🇫🇷Jerome PotierRound of 32 · Lost to Goran Prpic
- WC🇵🇹Joao Cunha SilvaRound of 32 · Lost to Jay Berger
- Q🇸🇰Marian VajdaRound of 32 · Lost to Fabrice Santoro
- 🇳🇱Mark KoevermansRound of 32 · Lost to Thomas Muster
- Q🇺🇸Mark OzerRound of 32 · Lost to Franco Davin
- 🇨🇿Martin StrelbaRound of 32 · Lost to Sergi Bruguera
- WC🇵🇹Nuno MarquesRound of 32 · Lost to Paolo Cane
- 🇦🇺Richard FrombergRound of 32 · Lost to Emilio Sanchez
- 🇩🇪Udo RiglewskiRound of 32 · Lost to Omar Camporese