| Singles | |
|---|---|
| 1990 Dutch Open | |
| Champion |
|
| Runner-up |
|
| Final score | 3–6, 6–4, 6–2, 6–0 |
Karel Nováček was the defending champion, but lost in the first round this year.
Francisco Clavet won the tournament, beating Eduardo Masso in the final, 3–6, 6–4, 6–2, 6–0.