Cologne 1978
Wojtek Fibak won the title, beating Vijay Amritraj 6–2 0–1 RET in the final.
Main draw 32 players
- 1🇺🇸John McEnroeSemifinals · Lost to Wojtek Fibak
- 2🇮🇹Corrado BarazzuttiQuarterfinals · Lost to Heinz Gunthardt
- 3🇭🇺Balazs TaroczyQuarterfinals · Lost to Vijay Amritraj
- 4🇵🇱Wojtek FibakFinal · Champion
- 5🇺🇸Peter FlemingRound of 32 · Lost to Vijay Amritraj
- 6🇺🇸Johan KriekQuarterfinals · Lost to John McEnroe
- 7🇨🇿Tomas SmidRound of 32 · Lost to Heinz Gunthardt
- 8🇺🇸Victor AmayaRound of 16 · Lost to Karl Meiler
- 🇮🇳Vijay AmritrajFinal · Lost to Wojtek Fibak
- 🇨🇭Heinz GunthardtSemifinals · Lost to Vijay Amritraj
- 🇩🇪Karl MeilerQuarterfinals · Lost to Wojtek Fibak
- 🇪🇸Antonio MunozRound of 16 · Lost to Corrado Barazzutti
- 🇦🇺Cliff LetcherRound of 16 · Lost to John McEnroe
- 🇺🇸Dick BohrnstedtRound of 16 · Lost to Johan Kriek
- Q🇺🇸Ferdi TayganRound of 16 · Lost to Wojtek Fibak
- 🇺🇸Ivan LendlRound of 16 · Lost to Balazs Taroczy
- 🇨🇿Jan KodesRound of 16 · Lost to Heinz Gunthardt
- 🇺🇸Trey WaltkeRound of 16 · Lost to Vijay Amritraj
- 🇮🇳Anand AmritrajRound of 32 · Lost to Corrado Barazzutti
- Q🇩🇪Andreas MaurerRound of 32 · Lost to John McEnroe
- 🇿🇦Bernie MittonRound of 32 · Lost to Antonio Munoz
- 🇬🇧Colin DowdeswellRound of 32 · Lost to Dick Bohrnstedt
- 🇵🇾Francisco GonzalezRound of 32 · Lost to Wojtek Fibak
- 🇿🇦Frew McmillanRound of 32 · Lost to Ferdi Taygan
- 🇦🇹Hans KaryRound of 32 · Lost to Karl Meiler
- 🇨🇿Jiri GranatRound of 32 · Lost to Victor Amaya
- 🇨🇿Jiri HrebecRound of 32 · Lost to Balazs Taroczy
- 🇦🇺Paul KronkRound of 32 · Lost to Trey Waltke
- 🇩🇪Rolf GehringRound of 32 · Lost to Jan Kodes
- 🇨🇿Stanislav BirnerRound of 32 · Lost to Cliff Letcher
- Q🇸🇪Tenny SvenssonRound of 32 · Lost to Johan Kriek
- 🇨🇿Vladimir ZednikRound of 32 · Lost to Ivan Lendl