# 1989 ABN World Tennis Tournament – Singles

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.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Miloslav Mečíř (first round)
* Jakob Hlasek (champion)
* Yannick Noah (semifinals)
* Jonas Svensson (first round)
* John Fitzgerald (first round)
* Darren Cahill (semifinals)
* Anders Järryd (final)
* Magnus Gustafsson (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking
| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | M Mečíř | 5 | 1 | | | | | | | | | | | | | | | | | | | |
| WC | P Kühnen | 7 | 6 | | WC | P Kühnen | 0 | 6 | | | | | | | | | | | | | | |
| Q | M Ostoja | 3 | 2 | | | M Schapers | 6 | 7 | | | | | | | | | | | | | | |
| | M Schapers | 6 | 6 | | | | | | | | M Schapers | 7 | 1 | 3 | | | | | | | | |
| | J Gunnarsson | 3 | 4 | | | | | | | 7 | A Järryd | 6 | 6 | 6 | | | | | | | | |
| | W Masur | 6 | 6 | | | W Masur | 2 | 1 | | | | | | | | | | | | | | |
| WC | M Koevermans | 3 | 1 | | 7 | A Järryd | 6 | 6 | | | | | | | | | | | | | | |
| 7 | A Järryd | 6 | 6 | | | | | | | | | | | | 7 | A Järryd | 6 | 6 | | | | |
| 4 | J Svensson | 2 | 4 | | | | | | | | | | | | 6 | D Cahill | 2 | 4 | | | | |
| | M Davis | 6 | 6 | | | M Davis | 6 | 6 | | | | | | | | | | | | | | |
| Q | M Westphal | 5 | 6 | | | L Lavalle | 2 | 3 | | | | | | | | | | | | | | |
| | L Lavalle | 7 | 7 | | | | | | | | M Davis | 3 | 6 | | | | | | | | | |
| | C Mezzadri | 7 | 2 | 2 | | | | | | 6 | D Cahill | 6 | 7 | | | | | | | | | |
| | C Saceanu | 6 | 6 | 6 | | C Saceanu | 6 | 6 | | | | | | | | | | | | | | |
| | J Lozano | 2 | 7 | 3 | 6 | D Cahill | 7 | 7 | | | | | | | | | | | | | | |
| 6 | D Cahill | 6 | 6 | 6 | | | | | | | | | | | | | | | 7 | Anders Järryd | 1 | 5 |
| 5 | J Fitzgerald | 3 | 6 | 2 | | | | | | | | | | | | | | | 2 | Jakob Hlasek | 6 | 7 |
| | O Rahnasto | 6 | 3 | 6 | | O Rahnasto | 3 | 6 | 1 | | | | | | | | | | | | | |
| | U Riglewski | 6 | 6 | | | U Riglewski | 6 | 2 | 6 | | | | | | | | | | | | | |
| | E Masso | 3 | 0 | | | | | | | | U Riglewski | 1 | 5 | | | | | | | | | |
| | M Šrejber | 4 | 6 | 3 | | | | | | 3 | Y Noah | 6 | 7 | | | | | | | | | |
| | C Bergström | 6 | 4 | 6 | | C Bergström | 3 | 5 | | | | | | | | | | | | | | |
| WC | T Nijssen | 3 | 2 | | 3 | Y Noah | 6 | 7 | | | | | | | | | | | | | | |
| 3 | Y Noah | 6 | 6 | | | | | | | | | | | | 3 | Y Noah | 6 | 2 | | | | |
| 8 | M Gustafsson | 6 | 6 | | | | | | | | | | | | 2 | J Hlasek | 7 | 6 | | | | |
| | D Nargiso | 4 | 4 | | 8 | M Gustafsson | 3 | 2 | | | | | | | | | | | | | | |
| Q | A Lesch | 2 | 4 | | | E Jelen | 6 | 6 | | | | | | | | | | | | | | |
| | E Jelen | 6 | 6 | | | | | | | | E Jelen | 1 | 1 | | | | | | | | | |
| | P Canè | 6 | 3 | 7 | | | | | | 2 | J Hlasek | 6 | 6 | | | | | | | | | |
| Q | R Kok | 3 | 6 | 6 | | P Canè | 2 | 1 | | | | | | | | | | | | | | |
| | T Svantesson | 6 | 2 | | 2 | J Hlasek | 6 | 6 | | | | | | | | | | | | | | |
| 2 | J Hlasek | 7 | 6 | | | | | | | | | | | | | | | | | | | |