Rotterdam Open 1998
Jan Siemerink won the title, beating Thomas Johansson 7–6(2) 6–2 in the final.
Main draw 32 players
- 1🇦🇺Patrick RafterQuarterfinals · Lost to Jan Siemerink
- 2🇸🇪Jonas BjorkmanRound of 32 · Lost to Tomas Carbonell
- 3🇬🇧Greg RusedskiQuarterfinals · Lost to Richard Krajicek
- 4🇷🇺Yevgeny KafelnikovRound of 32 · Lost to Thomas Johansson
- 5🇳🇱Richard KrajicekSemifinals · Lost to Jan Siemerink
- 6🇪🇸Sergi BrugueraRound of 16 · Lost to Johan Van Herck
- 7🇭🇷Goran IvanisevicRound of 32 · Lost to Jan Siemerink
- 🇳🇱Jan SiemerinkFinal · Champion
- 🇸🇪Thomas JohanssonFinal · Lost to Jan Siemerink
- 🇳🇿Brett StevenSemifinals · Lost to Thomas Johansson
- 🇧🇪Johan Van HerckQuarterfinals · Lost to Thomas Johansson
- Q🇪🇸Tomas CarbonellQuarterfinals · Lost to Brett Steven
- Q🇷🇴Adrian VoineaRound of 16 · Lost to Richard Krajicek
- LL🇮🇹Davide ScalaRound of 16 · Lost to Patrick Rafter
- 🇫🇷Guillaume RaouxRound of 16 · Lost to Jan Siemerink
- Q🇩🇰Kenneth CarlsenRound of 16 · Lost to Thomas Johansson
- 🇨🇿Martin Damm SrRound of 16 · Lost to Brett Steven
- 🇸🇪Mikael TillstromRound of 16 · Lost to Tomas Carbonell
- 🇺🇸Richey RenebergRound of 16 · Lost to Greg Rusedski
- 🇨🇿Bohdan UlihrachRound of 32 · Lost to Kenneth Carlsen
- 🇨🇿Daniel VacekRound of 32 · Lost to Guillaume Raoux
- WC🇳🇱Dennis Van ScheppingenRound of 32 · Lost to Richard Krajicek
- 🇲🇦Hicham AraziRound of 32 · Lost to Sergi Bruguera
- 🇨🇿Jiri NovakRound of 32 · Lost to Johan Van Herck
- WC🇳🇱John Van LottumRound of 32 · Lost to Davide Scala
- 🇲🇦Karim AlamiRound of 32 · Lost to Greg Rusedski
- 🇩🇪Marc Kevin GoellnerRound of 32 · Lost to Mikael Tillstrom
- 🇫🇷Nicolas EscudeRound of 32 · Lost to Martin Damm Sr
- 🇳🇱Paul HaarhuisRound of 32 · Lost to Adrian Voinea
- WC🇳🇱Peter WesselsRound of 32 · Lost to Patrick Rafter
- Q🇳🇱Raemon SluiterRound of 32 · Lost to Brett Steven
- 🇸🇪Tomas NydahlRound of 32 · Lost to Richey Reneberg