Johannesburg 1978
Cliff Richey won the title, beating Colin Dowdeswell 6–2 6–4 in the final.
Main draw 32 players
- 1🇦🇷Guillermo VilasSemifinals · Lost to Colin Dowdeswell
- 2🇺🇸Peter FlemingRound of 32 · Lost to Frew Mcmillan
- 3🇺🇸Hank PfisterRound of 16 · Lost to Bernie Mitton
- 4🇦🇺Colin DibleyQuarterfinals · Lost to Colin Dowdeswell
- 5🇫🇷Patrick ProisyRound of 32 · Lost to Eric Deblicker
- 6🇨🇭Heinz GunthardtRound of 32 · Lost to Paul Avis
- 7🇬🇧Robin DrysdaleRound of 32 · Lost to Pascal Portes
- 8🇺🇸Cliff RicheyFinal · Champion
- 🇬🇧Colin DowdeswellFinal · Lost to Cliff Richey
- 🇿🇦Bernie MittonSemifinals · Lost to Cliff Richey
- 🇫🇷Eric DeblickerQuarterfinals · Lost to Guillermo Vilas
- 🇿🇦Frew McmillanQuarterfinals · Lost to Cliff Richey
- 🇫🇷Yannick NoahQuarterfinals · Lost to Bernie Mitton
- 🇿🇦Andre ZietsmannRound of 16 · Lost to Eric Deblicker
- 🇺🇸Andrew PattisonRound of 16 · Lost to Cliff Richey
- 🇷🇴Ion TiriacRound of 16 · Lost to Frew Mcmillan
- 🇫🇷Pascal PortesRound of 16 · Lost to Colin Dowdeswell
- 🇫🇷Patrice DominguezRound of 16 · Lost to Guillermo Vilas
- 🇿🇦Paul AvisRound of 16 · Lost to Yannick Noah
- 🇬🇧Roger TaylorRound of 16 · Lost to Colin Dibley
- 🇳🇿Brian FairlieRound of 32 · Lost to Andrew Pattison
- 🇿🇦Byron BertramRound of 32 · Lost to Ion Tiriac
- 🇿🇦F BriscoeRound of 32 · Lost to Roger Taylor
- 🇩🇪Frank GebertRound of 32 · Lost to Cliff Richey
- 🇦🇺Geoff MastersRound of 32 · Lost to Yannick Noah
- 🇺🇸George HardieRound of 32 · Lost to Colin Dibley
- 🇿🇦George RudmanRound of 32 · Lost to Hank Pfister
- 🇫🇷Georges GovenRound of 32 · Lost to Bernie Mitton
- 🇿🇦John YuillRound of 32 · Lost to Guillermo Vilas
- 🇩🇪Jurgen FassbenderRound of 32 · Lost to Patrice Dominguez
- 🇬🇧Richard LewisRound of 32 · Lost to Andre Zietsmann
- 🇦🇺Ross CaseRound of 32 · Lost to Colin Dowdeswell