Cincinnati Open 1978
Eddie Dibbs won the title, beating Raul Ramirez 5–7 6–3 6–2 in the final.
Main draw 64 players
- 1🇺🇸Eddie DibbsFinal · Champion
- 2🇲🇽Raul RamirezFinal · Lost to Eddie Dibbs
- 3🇺🇸Harold SolomonSemifinals · Lost to Eddie Dibbs
- 4🇨🇱Jaime FillolRound of 32 · Lost to Eliot Teltscher
- 5🇨🇱Hans GildemeisterQuarterfinals · Lost to Harold Solomon
- 6🇺🇸Nick SavianoRound of 16 · Lost to Francisco Gonzalez
- 7🇺🇸Pat DupreRound of 16 · Lost to Erick Iskersky
- 8🇺🇸Terry MoorSemifinals · Lost to Raul Ramirez
- 9🇺🇸Gene MayerRound of 16 · Lost to Hans Gildemeister
- 10🇵🇾Francisco GonzalezQuarterfinals · Lost to Raul Ramirez
- 11🇦🇷Ricardo CanoRound of 64 · Lost to Erick Iskersky
- 12🇪🇬Ismail El ShafeiRound of 64 · Lost to Peter Mcnamara
- 13🇨🇱Patricio CornejoRound of 64 · Lost to Ferdi Taygan
- 14🇦🇺Dick CrealyRound of 16 · Lost to Terry Moor
- 15🇲🇽Marcello LaraRound of 64 · Lost to Mike Cahill
- 16🇦🇺Paul McnameeRound of 32 · Lost to Butch Seewagen
- 🇺🇸Erick IskerskyQuarterfinals · Lost to Eddie Dibbs
- 🇦🇺Peter McnamaraQuarterfinals · Lost to Terry Moor
- 🇺🇸Butch SeewagenRound of 16 · Lost to Harold Solomon
- 🇺🇸Eliot TeltscherRound of 16 · Lost to Peter Mcnamara
- 🇺🇸Eric FriedlerRound of 16 · Lost to Eddie Dibbs
- 🇺🇸Mike CahillRound of 16 · Lost to Raul Ramirez
- 🇨🇴Alvaro BetancurRound of 32 · Lost to Hans Gildemeister
- 🇺🇸Bill ScanlonRound of 32 · Lost to Terry Moor
- Q🇺🇸Bobby WebbRound of 32 · Lost to Mike Cahill
- 🇳🇿Brian FairlieRound of 32 · Lost to Dick Crealy
- 🇺🇸Bruce MansonRound of 32 · Lost to Harold Solomon
- 🇿🇦Deon JoubertRound of 32 · Lost to Gene Mayer
- 🇺🇸Ferdi TayganRound of 32 · Lost to Eric Friedler
- 🇨🇦Greg HalderRound of 32 · Lost to Francisco Gonzalez
- 🇨🇴Ivan MolinaRound of 32 · Lost to Nick Saviano
- 🇺🇸Joe MeyersRound of 32 · Lost to Raul Ramirez
- Q🇺🇸Larry TurvilleRound of 32 · Lost to Peter Mcnamara
- 🇨🇦Rejean GenoisRound of 32 · Lost to Pat Dupre
- 🇺🇸Rick FagelRound of 32 · Lost to Erick Iskersky
- 🇺🇸Steve KrulevitzRound of 32 · Lost to Eddie Dibbs
- 🇦🇺Alvin GardinerRound of 64 · Lost to Raul Ramirez
- 🇺🇸Andy KohlbergRound of 64 · Lost to Francisco Gonzalez
- 🇺🇸B KronrugeRound of 64 · Lost to Eddie Dibbs
- 🇫🇷Bernard FritzRound of 64 · Lost to Brian Fairlie
- Q🇺🇸Bill LofgrenRound of 64 · Lost to Joe Meyers
- Q🇺🇸Chris MayotteRound of 64 · Lost to Paul Mcnamee
- 🇫🇷Christophe FreyssRound of 64 · Lost to Eliot Teltscher
- 🇺🇸David SchneiderRound of 64 · Lost to Deon Joubert
- 🇺🇸Doug CrawfordRound of 64 · Lost to Butch Seewagen
- 🇺🇸Erik Van DillenRound of 64 · Lost to Bruce Manson
- 🇺🇸Gary PlockRound of 64 · Lost to Terry Moor
- Q🇺🇸Grant GoldenRound of 64 · Lost to Larry Turville
- 🇺🇸Henry BunisRound of 64 · Lost to Gene Mayer
- 🇺🇸Hubertus HoytRound of 64 · Lost to Eric Friedler
- 🇺🇸J SpinnenweberRound of 64 · Lost to Hans Gildemeister
- Q🇦🇺John BartlettRound of 64 · Lost to Bobby Webb
- 🇿🇦John YuillRound of 64 · Lost to Bill Scanlon
- 🇬🇧Jonathan SmithRound of 64 · Lost to Jaime Fillol
- 🇺🇸Keith RichardsonRound of 64 · Lost to Rejean Genois
- 🇺🇸Larry GottfriedRound of 64 · Lost to Rick Fagel
- Q🇺🇸Pancho WalthallRound of 64 · Lost to Steve Krulevitz
- 🇧🇴Ramiro BenavidesRound of 64 · Lost to Greg Halder
- Q🇺🇸Robert Vant HofRound of 64 · Lost to Dick Crealy
- 🇧🇷Roger GuedesRound of 64 · Lost to Nick Saviano
- 🇦🇺Terry RocavertRound of 64 · Lost to Harold Solomon
- 🇺🇸Trey WaltkeRound of 64 · Lost to Pat Dupre
- 🇺🇸Van WinitskyRound of 64 · Lost to Ivan Molina
- 🇺🇸Zan GuerryRound of 64 · Lost to Alvaro Betancur