1989 Swatch Open – Singles

Henri Leconte was the defending champion but lost in the second round to Goran Ivanišević.

Andrei Chesnokov won in the final 6–4, 6–4 against Jérôme Potier.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.


 * 1) 🇸🇪 Kent Carlsson (first round)
 * 2) 🇫🇷 Henri Leconte (second round)
 * 3) 🇦🇷 Guillermo Pérez Roldán (quarterfinals)
 * 4)  Ronald Agénor (second round)
 * 5) 🇦🇷 Alberto Mancini (quarterfinals)
 * 6)  Andrei Chesnokov (champion)
 * 7) 🇦🇹 Horst Skoff (second round)
 * 8) 🇪🇸 Jordi Arrese (second round)