Croatia Open Umag 1990
Goran Prpic won the title, beating Goran Ivanisevic 6–3 4–6 6–4 in the final.
Main draw 32 players
- 1🇭🇷Goran PrpicFinal · Champion
- 2🇭🇷Goran IvanisevicFinal · Lost to Goran Prpic
- 3🇳🇱Mark KoevermansRound of 16 · Lost to Horacio De La Pena
- 4🇩🇪Jens WoehrmannRound of 32 · Lost to Eric Jelen
- 5🇷🇺Andrei CherkasovSemifinals · Lost to Goran Ivanisevic
- 6🇫🇮Aki RahunenQuarterfinals · Lost to Horacio De La Pena
- 7🇸🇰Marian VajdaRound of 16 · Lost to Roberto Azar
- 8🇫🇷Thierry TulasneRound of 32 · Lost to Jerome Potier
- 🇦🇷Horacio De La PenaSemifinals · Lost to Goran Prpic
- 🇩🇪Eric JelenQuarterfinals · Lost to Andrei Cherkasov
- 🇦🇷Roberto AzarQuarterfinals · Lost to Goran Prpic
- 🇫🇷Tarik BenhabilesQuarterfinals · Lost to Goran Ivanisevic
- Q🇭🇷Damir BuljevicRound of 16 · Lost to Eric Jelen
- 🇺🇾Diego PerezRound of 16 · Lost to Goran Prpic
- 🇪🇸Fernando LunaRound of 16 · Lost to Goran Ivanisevic
- 🇪🇸Francisco RoigRound of 16 · Lost to Andrei Cherkasov
- 🇫🇷Jerome PotierRound of 16 · Lost to Tarik Benhabiles
- 🇵🇹Nuno MarquesRound of 16 · Lost to Aki Rahunen
- 🇩🇪Christian SaceanuRound of 32 · Lost to Tarik Benhabiles
- 🇦🇷Eduardo BengoecheaRound of 32 · Lost to Horacio De La Pena
- Q🇧🇪Eduardo MassoRound of 32 · Lost to Goran Prpic
- WC🇮🇹Francesco CancellottiRound of 32 · Lost to Marian Vajda
- 🇮🇱Gilad BloomRound of 32 · Lost to Aki Rahunen
- 🇦🇺Johan AndersonRound of 32 · Lost to Damir Buljevic
- Q🇪🇸Jose ClavetRound of 32 · Lost to Andrei Cherkasov
- 🇸🇪Lars JonssonRound of 32 · Lost to Nuno Marques
- CUBMario TabaresRound of 32 · Lost to Fernando Luna
- 🇩🇰Michael TausonRound of 32 · Lost to Diego Perez
- 🇻🇪Nicolas PereiraRound of 32 · Lost to Goran Ivanisevic
- 🇫🇷Olivier DelaitreRound of 32 · Lost to Francisco Roig
- Q🇳🇱Paul DoggerRound of 32 · Lost to Roberto Azar
- WC🇭🇷Sasa HirszonRound of 32 · Lost to Mark Koevermans