Thessaloniki CH 1990
Christian Geyer won the title, beating Henrik Holm 7–6 6–3 in the final.
Main draw 32 players
- 1🇳🇱Mark KoevermansRound of 16 · Lost to Scott Patridge
- 2🇮🇱Gilad BloomRound of 16 · Lost to Neil Borwick
- 4🇩🇪Martin SinnerRound of 32 · Lost to Shahar Perkiss
- 5🇮🇹Gianluca PozziSemifinals · Lost to Henrik Holm
- 6🇩🇪Christian GeyerFinal · Champion
- 7🇸🇪Henrik HolmFinal · Lost to Christian Geyer
- 8🇳🇬Nduka OdizorRound of 16 · Lost to Lars Koslowski
- Q🇩🇪Lars KoslowskiSemifinals · Lost to Christian Geyer
- 🇸🇪Johan CarlssonQuarterfinals · Lost to Gianluca Pozzi
- 🇦🇺Neil BorwickQuarterfinals · Lost to Lars Koslowski
- 🇺🇸Scott PatridgeQuarterfinals · Lost to Henrik Holm
- 🇮🇱Shahar PerkissQuarterfinals · Lost to Christian Geyer
- 🇩🇪Andres VysandRound of 16 · Lost to Shahar Perkiss
- LL🇦🇹Hannes MullerRound of 16 · Lost to Johan Carlsson
- WC🇬🇷John RigasRound of 16 · Lost to Henrik Holm
- Q🇩🇪Markus NaewieRound of 16 · Lost to Gianluca Pozzi
- 🇸🇪Peter NyborgRound of 16 · Lost to Christian Geyer
- WC🇬🇷Andreas FikasRound of 32 · Lost to Christian Geyer
- LL🇩🇪Claus DuppeRound of 32 · Lost to Johan Carlsson
- Q🇷🇴Dinu PescariuRound of 32 · Lost to Scott Patridge
- 🇫🇷Frederic FontangRound of 32 · Lost to Markus Naewie
- WC🇨🇭Ignace RotmanRound of 32 · Lost to Neil Borwick
- 🇸🇪Jan ApellRound of 32 · Lost to Gianluca Pozzi
- 🇪🇸Jose Luis AparisiRound of 32 · Lost to Gilad Bloom
- Q🇻🇪Maurice RuahRound of 32 · Lost to Lars Koslowski
- 🇬🇧Nick BrownRound of 32 · Lost to Andres Vysand
- LL🇸🇪Nicklas UtgrenRound of 32 · Lost to Nduka Odizor
- 🇦🇹Oliver FuchsRound of 32 · Lost to Hannes Muller
- 🇸🇪Per HenricssonRound of 32 · Lost to Peter Nyborg
- 🇮🇱Raviv WeidenfeldRound of 32 · Lost to John Rigas
- LL🇺🇸Scott MorseRound of 32 · Lost to Mark Koevermans
- WC🇬🇷Tasos BavelasRound of 32 · Lost to Henrik Holm