# 1985 Dutch Open – Singles

Anders Järryd was the defending champion, but decided to rest in order to compete at the Davis Cup the following week.
Ricki Osterthun won the title by defeating Kent Carlsson 4–6, 4–6, 6–4, 6–2, 6–3 in the final. The match was briefly interrupted by rain after the end of the third set.

## Seeds

* Henrik Sundström (second round)
* Tomáš Šmíd (quarterfinals)
* Andreas Maurer (semifinals)
* Tarik Benhabiles (first round)
* Sergio Casal (second round)
* Jonas Svensson (first round)
* Raúl Viver (first round)
* Givaldo Barbosa (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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final | Final |
| WC | Menno Oosting | 1 | 4 | | | | | | | |
| | Kent Carlsson | 6 | 6 | | | | | | | |
| | Kent Carlsson | 6 | 6 | | Kent Carlsson | 6 | 6 | 4 | 2 | 3 |
| | | | | | Ricki Osterthun | 4 | 4 | 6 | 6 | 6 |
| 3 | Andreas Maurer | 6 | 6 | 4 | Ricki Osterthun | 4 | 4 | 6 | 6 | 6 |
| | Ricki Osterthun | 3 | 7 | 6 | | | | | | |

### Top half

| 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 |
| 1 | H Sundström | 7 | 7 | | | | | | | | | | | | | | | |
| | S Youl | 5 | 5 | | 1 | H Sundström | 6 | 4 | 4 | | | | | | | | | |
| | M Schapers | 6 | 6 | | | M Schapers | 2 | 6 | 6 | | | | | | | | | |
| | Z Kuhárszky | 4 | 3 | | | | | | | | M Schapers | 4 | 6 | 2 | | | | |
| | E Adams | 4 | 2 | | | | | | | WC | M Oosting | 6 | 4 | 6 | | | | |
| WC | M Oosting | 6 | 6 | | WC | M Oosting | 6 | 6 | | | | | | | | | | |
| | M Cierro | 6 | 6 | | | M Cierro | 3 | 4 | | | | | | | | | | |
| 6 | J Svensson | 2 | 2 | | | | | | | | | | | | WC | M Oosting | 1 | 4 |
| 4 | T Benhabiles | 6 | 1 | 4 | | | | | | | | | | | | K Carlsson | 6 | 6 |
| | K Carlsson | 3 | 6 | 6 | | K Carlsson | 4 | 6 | 6 | | | | | | | | | |
| | C Limberger | 6 | 6 | | | C Limberger | 6 | 2 | 1 | | | | | | | | | |
| | I Kley | 1 | 3 | | | | | | | | K Carlsson | 6 | 6 | | | | | |
| Q | D Cahill | 6 | 4 | 6 | | | | | | Q | D Cahill | 2 | 2 | | | | | |
| | T Allan | 1 | 6 | 3 | Q | D Cahill | 6 | 3 | 6 | | | | | | | | | |
| Q | G Prpić | 6 | 4 | 6 | Q | G Prpić | 3 | 6 | 3 | | | | | | | | | |
| 7 | R Viver | 1 | 6 | 4 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | G Barbosa | 6 | 6 | | | | | | | | | | | | | | | |
| | G Rivas | 4 | 4 | | 8 | G Barbosa | 4 | 6 | 4 | | | | | | | | | |
| | E Sánchez | 6 | 4 | 3 | | H van Boeckel | 6 | 4 | 6 | | | | | | | | | |
| | H van Boeckel | 4 | 6 | 6 | | | | | | | H van Boeckel | 1 | 1 | | | | | |
| | C Miniussi | 2 | 1 | | | | | | | 3 | A Maurer | 6 | 6 | | | | | |
| | A de Minicis | 6 | 6 | | | A de Minicis | 4 | 6 | 5 | | | | | | | | | |
| WC | Christian Feenstra | 1 | 1 | | 3 | A Maurer | 6 | 2 | 7 | | | | | | | | | |
| 3 | A Maurer | 6 | 6 | | | | | | | | | | | 3 | A Maurer | 6 | 6 | 4 |
| 5 | S Casal | 6 | 5 | 6 | | | | | | | | | | | R Osterthun | 3 | 7 | 6 |
| | D Keretić | 4 | 7 | 4 | 5 | S Casal | 5 | 3 | | | | | | | | | | |
| Q | E Jelen | 5 | 5 | | | R Osterthun | 7 | 6 | | | | | | | | | | |
| | R Osterthun | 7 | 7 | | | | | | | | R Osterthun | 6 | 6 | | | | | |
| | S Simonsson | 4 | 4 | | | | | | | 2 | T Šmíd | 4 | 2 | | | | | |
| WC | C Mezzadri | 6 | 6 | | WC | C Mezzadri | 3 | 3 | | | | | | | | | | |
| Q | F Roese | 4 | 1 | | 2 | T Šmíd | 6 | 6 | | | | | | | | | | |
| 2 | T Šmíd | 6 | 6 | | | | | | | | | | | | | | | |