Guaruja 1983
Jose Luis Clerc won the title, beating Mats Wilander 3–6 7–5 6–1 in the final.
Main draw 48 players
- 1🇦🇷Jose Luis ClercFinal · Champion
- 2🇸🇪Mats WilanderFinal · Lost to Jose Luis Clerc
- 3🇪🇨Andres GomezQuarterfinals · Lost to Bernard Boileau
- 4🇨🇿Tomas SmidSemifinals · Lost to Mats Wilander
- 6🇺🇸Tim MayotteRound of 32 · Lost to Bernard Boileau
- 7🇵🇪Pablo ArrayaRound of 32 · Lost to Nick Saviano
- 8🇧🇷Marcos HocevarRound of 32 · Lost to Pat Dupre
- 9🇮🇱Shlomo GlicksteinRound of 32 · Lost to Alejandro Ganzabal
- 10🇸🇪Hans SimonssonRound of 32 · Lost to Ramiro Benavides
- 11🇧🇷Carlos KirmayrRound of 32 · Lost to Ramesh Krishnan
- 12🇺🇸Van WinitskyRound of 32 · Lost to Francisco Gonzalez
- 14🇺🇸Tim WilkisonRound of 16 · Lost to Bernard Boileau
- 15🇵🇾Victor PecciRound of 32 · Lost to Loic Courteau
- 16🇩🇪Damir KereticRound of 32 · Lost to Givaldo Barbosa
- 🇧🇪Bernard BoileauSemifinals · Lost to Jose Luis Clerc
- 🇵🇾Francisco GonzalezQuarterfinals · Lost to Jose Luis Clerc
- 🇺🇸Pat DupreQuarterfinals · Lost to Tomas Smid
- 🇮🇳Ramesh KrishnanQuarterfinals · Lost to Mats Wilander
- 🇦🇷Alejandro GanzabalRound of 16 · Lost to Jose Luis Clerc
- 🇧🇷Givaldo BarbosaRound of 16 · Lost to Andres Gomez
- 🇺🇸Jimmy BrownRound of 16 · Lost to Tomas Smid
- Q🇫🇷Loic CourteauRound of 16 · Lost to Mats Wilander
- 🇺🇸Nick SavianoRound of 16 · Lost to Francisco Gonzalez
- 🇧🇴Ramiro BenavidesRound of 16 · Lost to Pat Dupre
- 🇸🇪Stefan SimonssonRound of 16 · Lost to Ramesh Krishnan
- 🇺🇸Brad GilbertRound of 32 · Lost to Jimmy Brown
- 🇦🇷Carlos CastellanRound of 32 · Lost to Andres Gomez
- 🇺🇸David DowlenRound of 32 · Lost to Stefan Simonsson
- 🇦🇷Gustavo TibertiRound of 32 · Lost to Mats Wilander
- 🇨🇱Jaime FillolRound of 32 · Lost to Tim Wilkison
- 🇳🇬Nduka OdizorRound of 32 · Lost to Tomas Smid
- 🇨🇱Ricardo AcunaRound of 32 · Lost to Jose Luis Clerc
- 🇺🇸Ben TestermanRound of 64 · Lost to Stefan Simonsson
- 🇧🇷Cassio MottaRound of 64 · Lost to Gustavo Tiberti
- Q🇧🇷Cesar KistRound of 64 · Lost to Nduka Odizor
- Q🇺🇸Charles Buzz StrodeRound of 64 · Lost to Carlos Castellan
- 🇺🇸Egan AdamsRound of 64 · Lost to Pat Dupre
- 🇧🇷Ivan KleyRound of 64 · Lost to Ricardo Acuna
- 🇺🇸Jim GurfeinRound of 64 · Lost to Alejandro Ganzabal
- 🇧🇷Joao SoaresRound of 64 · Lost to Jaime Fillol
- 🇧🇷Julio GoesRound of 64 · Lost to Givaldo Barbosa
- 🇺🇸Morris Skip StrodeRound of 64 · Lost to Ramiro Benavides
- 🇨🇱Pedro RebolledoRound of 64 · Lost to Jimmy Brown
- 🇦🇷Ricardo CanoRound of 64 · Lost to Nick Saviano
- Q🇺🇸Richard MeyerRound of 64 · Lost to Bernard Boileau
- 🇺🇸Rocky RoyerRound of 64 · Lost to Loic Courteau
- 🇺🇸Tim GulliksonRound of 64 · Lost to Ramesh Krishnan
- 🇭🇺Zoltan KuharszkyRound of 64 · Lost to Francisco Gonzalez