| Singles | |
|---|---|
| 1989 ABN World Tennis Tournament | |
| 1988 Champion |
|
| Champion |
|
| Runner-up |
|
| Final score | 6–1, 7–5 |
Stefan Edberg was the defending champion but did not compete that year.
Jakob Hlasek won in the final 6–1, 7–5 against Anders Järryd.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.