Sofia 1981
Richard Meyer won the title, beating Leo Palin 6–4 7–6 7–6 in the final.
Main draw 32 players
- 1🇮🇹Gianni OcleppoRound of 32 · Lost to Leo Palin
- 2🇫🇷Christophe Roger-VasselinRound of 32 · Lost to Richard Meyer
- 3🇸🇪Per HjertquistRound of 32 · Lost to Hans Dieter Beutel
- 4🇨🇿Jiri GranatRound of 32 · Lost to Florin Segarceanu
- 5🇨🇭Ivan DupasquierRound of 16 · Lost to Bojidar Pampoulov
- 6🇨🇭Roland StadlerRound of 16 · Lost to Paul Torre
- 7🇩🇪Damir KereticRound of 32 · Lost to Christoph Zipf
- 8🇸🇪Stefan SimonssonRound of 32 · Lost to Karl Meiler
- 🇺🇸Richard MeyerFinal · Champion
- 🇫🇮Leo PalinFinal · Lost to Richard Meyer
- 🇷🇴Florin SegarceanuSemifinals · Lost to Richard Meyer
- 🇩🇪Hans Dieter BeutelSemifinals · Lost to Leo Palin
- 🇧🇬Bojidar PampoulovQuarterfinals · Lost to Florin Segarceanu
- 🇩🇪Christoph ZipfQuarterfinals · Lost to Leo Palin
- 🇩🇪Karl MeilerQuarterfinals · Lost to Richard Meyer
- 🇫🇷Paul TorreQuarterfinals · Lost to Hans Dieter Beutel
- 🇺🇸Bob BlazekovicRound of 16 · Lost to Leo Palin
- 🇪🇬Ismail El ShafeiRound of 16 · Lost to Christoph Zipf
- 🇭🇺Janos GutiRound of 16 · Lost to Florin Segarceanu
- 🇺🇸Mike GandolfoRound of 16 · Lost to Hans Dieter Beutel
- 🇧🇪Thierry StevauxRound of 16 · Lost to Karl Meiler
- 🇬🇧Thomas EmmrichRound of 16 · Lost to Richard Meyer
- 🇧🇬Assen DishkovRound of 32 · Lost to Thierry Stevaux
- 🇫🇷Christophe BernelleRound of 32 · Lost to Ismail El Shafei
- 🇮🇹Famiano MeneschincheriRound of 32 · Lost to Thomas Emmrich
- 🇩🇪Hartmut KirchhubelRound of 32 · Lost to Mike Gandolfo
- 🇫🇷Jean Louis HailletRound of 32 · Lost to Bojidar Pampoulov
- 🇧🇬Julian StamatovRound of 32 · Lost to Roland Stadler
- 🇳🇱Louk SandersRound of 32 · Lost to Paul Torre
- 🇮🇹Patrizio ParriniRound of 32 · Lost to Ivan Dupasquier
- 🇸🇪Stefan SvenssonRound of 32 · Lost to Bob Blazekovic
- 🇧🇬Teodor BatchevRound of 32 · Lost to Janos Guti