Manaus CH 1990
Luis Herrera won the title, beating Jaime Oncins 6–2 7–5 in the final.
Main draw 32 players
- 1🇧🇷Cassio MottaQuarterfinals · Lost to Shelby Cannon
- 2🇨🇱Pedro RebolledoRound of 16 · Lost to Tobias Svantesson
- 3🇧🇷Jaime OncinsFinal · Lost to Luis Herrera
- 4🇲🇽Luis HerreraFinal · Champion
- 5🇦🇷Daniel OrsanicRound of 32 · Lost to Ivan Kley
- 6🇧🇷Jose DaherQuarterfinals · Lost to Luis Herrera
- 7🇬🇧Danny SapsfordRound of 32 · Lost to Mario Rincon
- 8🇬🇧Mark PetcheyRound of 32 · Lost to Olli Rahnasto
- Q🇺🇸Shelby CannonSemifinals · Lost to Jaime Oncins
- Q🇸🇪Tobias SvantessonSemifinals · Lost to Luis Herrera
- 🇧🇷Danilo MarcelinoQuarterfinals · Lost to Jaime Oncins
- 🇨🇴Mario RinconQuarterfinals · Lost to Tobias Svantesson
- 🇻🇪Carlos ClaverieRound of 16 · Lost to Luis Herrera
- Q🇦🇷Hernan ChousaRound of 16 · Lost to Mario Rincon
- 🇧🇷Ivan KleyRound of 16 · Lost to Danilo Marcelino
- WC🇧🇷Marcelo SaliolaRound of 16 · Lost to Cassio Motta
- 🇫🇮Olli RahnastoRound of 16 · Lost to Shelby Cannon
- BAHRoger SmithRound of 16 · Lost to Jose Daher
- 🇧🇷William KyriakosRound of 16 · Lost to Jaime Oncins
- 🇧🇷Alexandre HocevarRound of 32 · Lost to Cassio Motta
- Q🇻🇪Alfonso MoraRound of 32 · Lost to William Kyriakos
- 🇨🇱Felipe RiveraRound of 32 · Lost to Tobias Svantesson
- 🇧🇷Fernando RoeseRound of 32 · Lost to Jaime Oncins
- 🇦🇷Gabriel MarkusRound of 32 · Lost to Hernan Chousa
- 🇧🇷Joao ZwetschRound of 32 · Lost to Pedro Rebolledo
- 🇨🇱Jose Antonio FernandezRound of 32 · Lost to Carlos Claverie
- 🇺🇸Malcolm AllenRound of 32 · Lost to Luis Herrera
- CUBMario TabaresRound of 32 · Lost to Jose Daher
- WC🇦🇷Martin StringariRound of 32 · Lost to Shelby Cannon
- WC🇧🇷Mauro MenezesRound of 32 · Lost to Roger Smith
- WC🇧🇷Roberto JabaliRound of 32 · Lost to Danilo Marcelino
- 🇧🇪Xavier DaufresneRound of 32 · Lost to Marcelo Saliola