1989 Stella Artois Indoor – Singles
| Singles | |
|---|---|
| 1989 Stella Artois Indoor | |
| 1988 Champion |
 Yannick Noah
|
| Champion |
 Boris Becker
|
| Runner-up |
 Alexander Volkov
|
| Final score | 6–1, 6–2 |
Yannick Noah was the defending champion but lost in the second round to Slobodan Živojinović.
Boris Becker won in the final 6–1, 6–2 against Alexander Volkov.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
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