Milwaukee 1968
Clark Graebner won the title, beating Stan Smith 6–3 7–5 6–0 in the final.
Main draw 64 players
- 🇺🇸Clark GraebnerFinal · Champion
- 🇺🇸Stan SmithFinal · Lost to Clark Graebner
- 🇺🇸Charlie PasarellSemifinals · Lost to Clark Graebner
- 🇺🇸Cliff RicheySemifinals · Lost to Stan Smith
- 🇺🇸Jim OsborneQuarterfinals · Lost to Charlie Pasarell
- 🇺🇸Marty RiessenQuarterfinals · Lost to Cliff Richey
- 🇨🇦Mike BelkinQuarterfinals · Lost to Clark Graebner
- 🇨🇱Patricio CornejoQuarterfinals · Lost to Stan Smith
- 🇦🇺Allan StoneRound of 16 · Lost to Clark Graebner
- 🇺🇸Arthur AsheRound of 16 · Lost to Patricio Cornejo
- 🇺🇸Bob LutzRound of 16 · Lost to Mike Belkin
- 🇺🇸Butch SeewagenRound of 16 · Lost to Charlie Pasarell
- 🇨🇱Jaime FillolRound of 16 · Lost to Marty Riessen
- 🇲🇽Joaquin Loyo MayoRound of 16 · Lost to Cliff Richey
- 🇿🇦Peter Van LingenRound of 16 · Lost to Jim Osborne
- 🇮🇳Ramanathan KrishnanRound of 16 · Lost to Stan Smith
- 🇺🇸Bill Harris#227Round of 32 · Lost to Peter Van Lingen
- 🇺🇸Bob BrienRound of 32 · Lost to Stan Smith
- 🇺🇸Bob StuckertRound of 32 · Lost to Clark Graebner
- 🇦🇺Colin StubsRound of 32 · Lost to Ramanathan Krishnan
- 🇺🇸Dan BleckingerRound of 32 · Lost to Arthur Ashe
- 🇺🇸Danny ObryantRound of 32 · Lost to Jim Osborne
- 🇺🇸Dick DellRound of 32 · Lost to Cliff Richey
- 🇺🇸Dick LeachRound of 32 · Lost to Marty Riessen
- 🇺🇸Jim McmanusRound of 32 · Lost to Allan Stone
- 🇦🇺John BrownRound of 32 · Lost to Jaime Fillol
- 🇺🇸Peter FishbachRound of 32 · Lost to Joaquin Loyo Mayo
- 🇮🇳Premjit LallRound of 32 · Lost to Butch Seewagen
- 🇺🇸Sherwood StewartRound of 32 · Lost to Mike Belkin
- PURTico CarreroRound of 32 · Lost to Patricio Cornejo
- 🇺🇸William BrownRound of 32 · Lost to Bob Lutz
- 🇺🇸Zan GuerryRound of 32 · Lost to Charlie Pasarell
- 🇺🇸Anthony BullRound of 64 · Lost to Mike Belkin
- 🇺🇸Bill CullenRound of 64 · Lost to Dick Dell
- 🇺🇸Bob SprengelmeyerRound of 64 · Lost to Stan Smith
- 🇺🇸Bob StockRound of 64 · Lost to William Brown
- 🇺🇸Brian MarcusRound of 64 · Lost to Ramanathan Krishnan
- 🇬🇧Chris BovettRound of 64 · Lost to Sherwood Stewart
- 🇺🇸Chum Steele IiiRound of 64 · Lost to Cliff Richey
- 🇺🇸Conway UngerRound of 64 · Lost to Marty Riessen
- 🇺🇸Dick KnightRound of 64 · Lost to Danny Obryant
- 🇺🇸Ed GrubbRound of 64 · Lost to Charlie Pasarell
- 🇨🇴Francisco CastilloRound of 64 · Lost to Clark Graebner
- 🇺🇸Frank ConnerRound of 64 · Lost to Peter Van Lingen
- 🇺🇸Glen MullinsRound of 64 · Lost to Peter Fishbach
- 🇺🇸Jeff BorowiakRound of 64 · Lost to Tico Carrero
- 🇯🇵Jun KukiRound of 64 · Lost to Colin Stubs
- 🇺🇸Larry TurvilleRound of 64 · Lost to Bob Brien
- 🇺🇸Lenny SchlossRound of 64 · Lost to Joaquin Loyo Mayo
- 🇺🇸Lester SackRound of 64 · Lost to Jaime Fillol
- 🇦🇷Lito AlvarezRound of 64 · Lost to John Brown
- 🇺🇸Mike EstepRound of 64 · Lost to Butch Seewagen
- 🇺🇸Mike MarcinRound of 64 · Lost to Bob Stuckert
- 🇲🇽Pedro LangreRound of 64 · Lost to Dick Leach
- 🇺🇸Ron GoldmanRound of 64 · Lost to Premjit Lall
- 🇺🇸Rudy HernandoRound of 64 · Lost to Bob Lutz
- 🇺🇸Stanley PasarellRound of 64 · Lost to Jim Osborne
- 🇺🇸Steve FaulkRound of 64 · Lost to Bill Harris
- 🇦🇷Tito VazquezRound of 64 · Lost to Allan Stone
- 🇺🇸Tom GormanRound of 64 · Lost to Zan Guerry
- 🇺🇸Tom LeonardRound of 64 · Lost to Dan Bleckinger
- 🇺🇸Tom MozurRound of 64 · Lost to Arthur Ashe
- 🇺🇸Van HillRound of 64 · Lost to Patricio Cornejo
- 🇺🇸Walter JohnsonRound of 64 · Lost to Jim Mcmanus