Porto Alegre CH 1981
Carlos Kirmayr won the title, beating Julio Goes 7–6 6–3 in the final.
Main draw 48 players
- 1🇧🇷Carlos KirmayrFinal · Champion
- 2🇧🇷Joao SoaresRound of 16 · Lost to Bruce Kleege
- 3🇦🇷Gustavo GuerreroRound of 32 · Lost to Julio Goes
- 4🇦🇷Roberto ArguelloSemifinals · Lost to Carlos Kirmayr
- 5🇦🇷Guillermo AuboneQuarterfinals · Lost to Carlos Kirmayr
- 6🇦🇷Gustavo TibertiSemifinals · Lost to Julio Goes
- 7🇧🇷Cassio MottaRound of 32 · Lost to Givaldo Barbosa
- 8🇦🇷Carlos GattikerRound of 32 · Lost to Fabrizio Fanucci
- 9🇦🇷Carlos LandoRound of 16 · Lost to Carlos Kirmayr
- 10🇨🇴Javier RestrepoRound of 16 · Lost to Gustavo Tiberti
- 12🇦🇷Alejandro GattikerRound of 16 · Lost to Julio Goes
- 13🇵🇪Pablo ArrayaRound of 64 · Lost to Thomas Stalhandske
- 14🇺🇸Bruce KleegeQuarterfinals · Lost to Gustavo Tiberti
- 15🇧🇷Ney KellerQuarterfinals · Lost to Julio Goes
- 16🇦🇷Andres MolinaRound of 16 · Lost to Guillermo Aubone
- 🇧🇷Julio GoesFinal · Lost to Carlos Kirmayr
- 🇧🇷Givaldo BarbosaQuarterfinals · Lost to Roberto Arguello
- 🇮🇹Fabrizio FanucciRound of 16 · Lost to Ney Keller
- 🇧🇷Paulo WildmannRound of 16 · Lost to Roberto Arguello
- 🇦🇷Thomas StalhandskeRound of 16 · Lost to Givaldo Barbosa
- 🇦🇷Alejandro CerundoloRound of 32 · Lost to Guillermo Aubone
- 🇧🇷Cesar KistRound of 32 · Lost to Paulo Wildmann
- 🇧🇷Eduardo OncinsRound of 32 · Lost to Gustavo Tiberti
- 🇦🇷Guillermo CortiRound of 32 · Lost to Javier Restrepo
- 🇺🇾Hugo RoveranoRound of 32 · Lost to Bruce Kleege
- 🇧🇷Hugo ScottRound of 32 · Lost to Andres Molina
- 🇨🇱Ivan CamusRound of 32 · Lost to Joao Soares
- 🇧🇷Jose SchmidtRound of 32 · Lost to Carlos Kirmayr
- 🇺🇸Mark BuckleyRound of 32 · Lost to Ney Keller
- 🇺🇸Nial BrashRound of 32 · Lost to Thomas Stalhandske
- 🇬🇧Nigel SearsRound of 32 · Lost to Roberto Arguello
- 🇪🇨Raul Antonio ViverRound of 32 · Lost to Alejandro Gattiker
- 🇮🇹Roberto LombardiRound of 32 · Lost to Carlos Lando
- 🇧🇷Carlos ChabalgoityRound of 64 · Lost to Carlos Lando
- 🇧🇷Edvaldo OliveiraRound of 64 · Lost to Gustavo Tiberti
- 🇧🇷Eleuterio MartinsRound of 64 · Lost to Roberto Arguello
- 🇧🇷Enio MoreiraRound of 64 · Lost to Guillermo Corti
- 🇧🇷Fernando RoeseRound of 64 · Lost to Cesar Kist
- 🇧🇷Flavio ArenzonRound of 64 · Lost to Ivan Camus
- 🇧🇷Ivan KleyRound of 64 · Lost to Julio Goes
- 🇬🇧Jeremy BatesRound of 64 · Lost to Carlos Gattiker
- 🇦🇷Juan Carlos YunisRound of 64 · Lost to Ney Keller
- 🇺🇸Maurice HunterRound of 64 · Lost to Carlos Kirmayr
- 🇧🇷Paschoal PenettaRound of 64 · Lost to Hugo Scott
- 🇺🇾Philippe PinetRound of 64 · Lost to Bruce Kleege
- 🇧🇷Renato FigueiredoRound of 64 · Lost to Givaldo Barbosa
- 🇦🇷Ricardo RiveraRound of 64 · Lost to Guillermo Aubone
- 🇧🇷Roger GuedesRound of 64 · Lost to Alejandro Gattiker