San Ramon CH 1978
Tim Wilkison won the title, beating Bruce Manson 7–6 6–1 in the final.
Main draw 64 players
- 1🇦🇺Cliff LetcherRound of 16 · Lost to Mike Shore
- 2🇺🇸Marty RiessenQuarterfinals · Lost to Tim Wilkison
- 3🇿🇦Willem PrinslooRound of 32 · Lost to Mike Wayman
- 4🇺🇸Erik Van DillenRound of 16 · Lost to Bill Maze
- 5🇺🇸Bruce MansonFinal · Lost to Tim Wilkison
- 6🇳🇿Russell SimpsonQuarterfinals · Lost to Mike Wayman
- 7🇺🇸Tim WilkisonFinal · Champion
- 8🇦🇺Bill LloydSemifinals · Lost to Bruce Manson
- 9🇲🇽Marcello LaraRound of 16 · Lost to Marty Riessen
- 10🇦🇺Peter CampbellRound of 64 · Lost to Gene Malin
- 11🇻🇪Jorge AndrewRound of 64 · Lost to Charlie Pasarell
- 12ZIMHaroon IsmailRound of 16 · Lost to Russell Simpson
- 13🇦🇺Warren MaherRound of 64 · Lost to Andy Lucchesi
- 14🇺🇸Bill MazeQuarterfinals · Lost to Bill Lloyd
- 15🇺🇸Rick FisherRound of 16 · Lost to Bruce Manson
- 16🇺🇸Christopher SylvanRound of 64 · Lost to Eddie Edwards
- 🇬🇧Mike WaymanSemifinals · Lost to Tim Wilkison
- Q🇺🇸Mike ShoreQuarterfinals · Lost to Bruce Manson
- 🇺🇸Andy LucchesiRound of 16 · Lost to Tim Wilkison
- 🇺🇸Bruce KleegeRound of 16 · Lost to Bill Lloyd
- 🇿🇦Eddie EdwardsRound of 16 · Lost to Mike Wayman
- 🇺🇸Cary StansburyRound of 32 · Lost to Bill Lloyd
- 🇺🇸Charlie PasarellRound of 32 · Lost to Mike Shore
- 🇺🇸Doug KingRound of 32 · Lost to Cliff Letcher
- Q🇺🇸Gene MalinRound of 32 · Lost to Bruce Kleege
- 🇺🇸George AmayaRound of 32 · Lost to Erik Van Dillen
- 🇫🇷Herve GauvainRound of 32 · Lost to Tim Wilkison
- 🇺🇸Ian HarrisRound of 32 · Lost to Marty Riessen
- 🇺🇸John HayesRound of 32 · Lost to Rick Fisher
- Q🇺🇸Junie ChatmanRound of 32 · Lost to Bill Maze
- Q🇺🇸Mark HardyRound of 32 · Lost to Haroon Ismail
- 🇺🇸Matt MitchellRound of 32 · Lost to Eddie Edwards
- 🇺🇸Mike SassanoRound of 32 · Lost to Russell Simpson
- 🇺🇸Peter RennertRound of 32 · Lost to Andy Lucchesi
- Q🇮🇪Sean SorensenRound of 32 · Lost to Marcello Lara
- 🇺🇸Vincent Van PattenRound of 32 · Lost to Bruce Manson
- 🇺🇸Brad RoweRound of 64 · Lost to Bruce Manson
- 🇺🇸Bruce FoxworthRound of 64 · Lost to Mike Wayman
- 🇺🇸Charles Buzz StrodeRound of 64 · Lost to Matt Mitchell
- Q🇺🇸Doug DitmerRound of 64 · Lost to Doug King
- 🇵🇪Fernando MaynettoRound of 64 · Lost to Bruce Kleege
- 🇺🇸George TaylorRound of 64 · Lost to Russell Simpson
- 🇺🇸Guillermo OropezRound of 64 · Lost to John Hayes
- 🇺🇸Horace ReidRound of 64 · Lost to Erik Van Dillen
- 🇺🇸Howard SchoenfieldRound of 64 · Lost to Bill Maze
- 🇸🇪Jan NorbackRound of 64 · Lost to Mike Shore
- 🇮🇳Jay RoyappaRound of 64 · Lost to Tim Wilkison
- 🇫🇷Jerome VanierRound of 64 · Lost to George Amaya
- 🇺🇸John Chris LewisRound of 64 · Lost to Vincent Van Patten
- 🇺🇸John MolinRound of 64 · Lost to Ian Harris
- 🇬🇧John PaishRound of 64 · Lost to Sean Sorensen
- 🇺🇸John WhitlingerRound of 64 · Lost to Marty Riessen
- 🇨🇱Juan NunezRound of 64 · Lost to Bill Lloyd
- Q🇦🇺Keith HancockRound of 64 · Lost to Herve Gauvain
- 🇫🇮Leo PalinRound of 64 · Lost to Mark Hardy
- 🇺🇸Michael GreenbergRound of 64 · Lost to Mike Sassano
- 🇺🇸Mike BarrRound of 64 · Lost to Cliff Letcher
- 🇺🇸P KrajcikRound of 64 · Lost to Junie Chatman
- 🇺🇸Peter PearsonRound of 64 · Lost to Marcello Lara
- 🇺🇸Richard MeyerRound of 64 · Lost to Haroon Ismail
- 🇺🇸Robert Vant HofRound of 64 · Lost to Cary Stansbury
- 🇺🇸Rocky MaguireRound of 64 · Lost to Rick Fisher
- 🇺🇸Scott CarnahanRound of 64 · Lost to Peter Rennert
- Q🇺🇸Warren EberRound of 64 · Lost to Willem Prinsloo