Colombus 1978
Arthur Ashe won the title, beating Bob Lutz 6–3 6–4 in the final.
Main draw 32 players
- 1🇺🇸Brian GottfriedSemifinals · Lost to Bob Lutz
- 2🇲🇽Raul RamirezRound of 32 · Lost to Van Winitsky
- 3🇺🇸Arthur AsheFinal · Champion
- 4🇺🇸Tim GulliksonRound of 16 · Lost to Ivan Molina
- 5🇺🇸Bob LutzFinal · Lost to Arthur Ashe
- 6🇺🇸Peter FlemingQuarterfinals · Lost to Arthur Ashe
- 7🇦🇺Bob GiltinanRound of 32 · Lost to Tom Gullikson
- 8🇵🇾Francisco GonzalezQuarterfinals · Lost to Brian Gottfried
- 🇺🇸Eliot TeltscherSemifinals · Lost to Arthur Ashe
- 🇨🇴Ivan MolinaQuarterfinals · Lost to Bob Lutz
- 🇺🇸Tom GulliksonQuarterfinals · Lost to Eliot Teltscher
- 🇫🇷Christophe FreyssRound of 16 · Lost to Tom Gullikson
- Q🇺🇸Erick IskerskyRound of 16 · Lost to Arthur Ashe
- 🇨🇦Greg HalderRound of 16 · Lost to Peter Fleming
- 🇬🇧Robin DrysdaleRound of 16 · Lost to Francisco Gonzalez
- 🇦🇺Terry RocavertRound of 16 · Lost to Brian Gottfried
- Q🇺🇸Tim GarciaRound of 16 · Lost to Bob Lutz
- 🇺🇸Van WinitskyRound of 16 · Lost to Eliot Teltscher
- Q🇫🇷Bernard FritzRound of 32 · Lost to Brian Gottfried
- 🇦🇺Cliff LetcherRound of 32 · Lost to Tim Garcia
- 🇦🇺Colin DibleyRound of 32 · Lost to Bob Lutz
- 🇿🇦Deon JoubertRound of 32 · Lost to Peter Fleming
- 🇺🇸Fred McnairRound of 32 · Lost to Christophe Freyss
- 🇦🇺John MarksRound of 32 · Lost to Tim Gullikson
- 🇿🇦John YuillRound of 32 · Lost to Francisco Gonzalez
- 🇺🇸Larry GottfriedRound of 32 · Lost to Arthur Ashe
- 🇦🇷Lito AlvarezRound of 32 · Lost to Terry Rocavert
- 🇲🇽Marcello LaraRound of 32 · Lost to Robin Drysdale
- Q🇦🇺Paul KronkRound of 32 · Lost to Ivan Molina
- 🇦🇺Peter McnamaraRound of 32 · Lost to Erick Iskersky
- 🇿🇦Raymond MooreRound of 32 · Lost to Eliot Teltscher
- 🇮🇳Sashi MenonRound of 32 · Lost to Greg Halder