Quito 1981
Eddie Dibbs won the title, beating David Carter 3–6 6–0 7–5 in the final.
Main draw 32 players
- 1🇦🇷Jose Luis ClercQuarterfinals · Lost to Andres Gomez
- 2🇵🇾Victor PecciQuarterfinals · Lost to Hans Gildemeister
- 3🇺🇸Eddie DibbsFinal · Champion
- 4🇪🇸Jose HiguerasRound of 32 · Lost to David Carter
- 5🇨🇱Hans GildemeisterSemifinals · Lost to David Carter
- 6🇪🇸Manuel OrantesQuarterfinals · Lost to Eddie Dibbs
- 7🇪🇨Andres GomezSemifinals · Lost to Eddie Dibbs
- 8🇦🇷Ricardo CanoRound of 32 · Lost to Ricardo Ycaza
- 🇦🇺David CarterFinal · Lost to Eddie Dibbs
- 🇪🇨Ricardo YcazaQuarterfinals · Lost to David Carter
- 🇨🇴Alejandro CortesRound of 16 · Lost to Manuel Orantes
- 🇩🇪Andreas MaurerRound of 16 · Lost to Jose Luis Clerc
- 🇮🇹Francesco CancellottiRound of 16 · Lost to Ricardo Ycaza
- 🇵🇾Francisco GonzalezRound of 16 · Lost to Victor Pecci
- 🇪🇸Gabriel UrpiRound of 16 · Lost to Hans Gildemeister
- 🇦🇷Guillermo AuboneRound of 16 · Lost to Eddie Dibbs
- 🇨🇴Javier RestrepoRound of 16 · Lost to David Carter
- 🇨🇱Ricardo AcunaRound of 16 · Lost to Andres Gomez
- 🇦🇷Alejandro GanzabalRound of 32 · Lost to Javier Restrepo
- Q🇦🇷Alejandro GattikerRound of 32 · Lost to Alejandro Cortes
- 🇧🇪Bernard BoileauRound of 32 · Lost to Guillermo Aubone
- 🇦🇷Carlos GattikerRound of 32 · Lost to Manuel Orantes
- 🇩🇪Damir KereticRound of 32 · Lost to Francesco Cancellotti
- 🇨🇱Heinz GildemeisterRound of 32 · Lost to Andreas Maurer
- 🇨🇱Juan NunezRound of 32 · Lost to Gabriel Urpi
- 🇧🇷Marcos HocevarRound of 32 · Lost to Victor Pecci
- 🇨🇴Orlando AgudeloRound of 32 · Lost to Jose Luis Clerc
- 🇵🇪Pablo ArrayaRound of 32 · Lost to Andres Gomez
- 🇨🇱Pedro RebolledoRound of 32 · Lost to Ricardo Acuna
- Q🇩🇪Peter SpangRound of 32 · Lost to Eddie Dibbs
- 🇧🇴Ramiro BenavidesRound of 32 · Lost to Francisco Gonzalez
- 🇪🇨Raul Antonio ViverRound of 32 · Lost to Hans Gildemeister