Cleveland 1978
Peter Feigl won the title, beating Van Winitsky 4–6 6–3 6–3 in the final.
Main draw 32 players
- 1🇺🇸Roscoe TannerRound of 32 · Lost to John Yuill
- 2🇺🇸Dick StocktonSemifinals · Lost to Van Winitsky
- 3🇬🇧John LloydRound of 32 · Lost to Bernard Fritz
- 4🇦🇺Bob GiltinanRound of 32 · Lost to Trey Waltke
- 5🇺🇸Brian TeacherRound of 16 · Lost to Pascal Portes
- 6🇺🇸Mike CahillSemifinals · Lost to Peter Feigl
- 7🇿🇦Willem PrinslooRound of 16 · Lost to Van Winitsky
- 8🇪🇬Ismail El ShafeiRound of 16 · Lost to Christophe Roger-Vasselin
- 🇦🇹Peter FeiglFinal · Champion
- 🇺🇸Van WinitskyFinal · Lost to Peter Feigl
- 🇫🇷Christophe Roger-VasselinQuarterfinals · Lost to Peter Feigl
- 🇺🇸Erik Van DillenQuarterfinals · Lost to Mike Cahill
- 🇫🇷Pascal PortesQuarterfinals · Lost to Dick Stockton
- 🇺🇸Rick FisherQuarterfinals · Lost to Van Winitsky
- 🇫🇷Bernard FritzRound of 16 · Lost to Rick Fisher
- 🇿🇦John YuillRound of 16 · Lost to Peter Feigl
- 🇲🇽Marcello LaraRound of 16 · Lost to Mike Cahill
- 🇺🇸Tim WilkisonRound of 16 · Lost to Dick Stockton
- 🇺🇸Trey WaltkeRound of 16 · Lost to Erik Van Dillen
- 🇨🇴Alvaro BetancurRound of 32 · Lost to Peter Feigl
- 🇦🇺Alvin GardinerRound of 32 · Lost to Dick Stockton
- 🇺🇸Bruce MansonRound of 32 · Lost to Tim Wilkison
- 🇫🇷Christophe FreyssRound of 32 · Lost to Marcello Lara
- 🇮🇹Gianni OcleppoRound of 32 · Lost to Brian Teacher
- 🇫🇷Gilles MorettonRound of 32 · Lost to Rick Fisher
- ZIMHaroon IsmailRound of 32 · Lost to Erik Van Dillen
- 🇬🇧John FeaverRound of 32 · Lost to Van Winitsky
- 🇦🇺John MarksRound of 32 · Lost to Christophe Roger-Vasselin
- 🇺🇸John SadriRound of 32 · Lost to Mike Cahill
- 🇳🇿Onny ParunRound of 32 · Lost to Pascal Portes
- 🇺🇸Steve DentonRound of 32 · Lost to Willem Prinsloo
- 🇺🇸Tony GrahamRound of 32 · Lost to Ismail El Shafei