1989 Geneva Open – Singles
| Singles | |
|---|---|
| 1989 Geneva Open | |
| Champion |
 Marc Rosset
|
| Runner-up |
 Guillermo Pérez-Roldán
|
| Final score | 6–4, 7–5 |
Marián Vajda was the defending champion, but did not participate this year.
Marc Rosset won the title, defeating Guillermo Pérez-Roldán 6–4, 7–5 in the final.
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