1989 Benson and Hedges Open – Singles
defeated Amos Mansdorf 6–4, 6–0 to win the 1989 Heineken Open singles competition. Mansdorf was the defending champion.Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
- Amos Mansdorf '
- Ramesh Krishnan
- Milan Šrejber '
- Michiel Schapers '
- Richard Matuszewski '
- Horacio de la Peña '
- Shuzo Matsuoka '
- Jim Grabb
Draw
Key