| Singles | |
|---|---|
| 1989 BMW Open | |
| Champion |
|
| Runner-up |
|
| Final score | 5–7, 7–6, 6–2 |
Guillermo Pérez-Roldán was the defending champion, but lost in the quarterfinals this year.
Andrei Chesnokov won the title, defeating Martin Střelba, 5–7, 7–6, 6–2 in the final.