# 1986 Dutch Open – Singles

The 1986 Dutch Open – Singles was an event of the 1975 Dutch Open tennis tournament and was played on outdoor clay courts at 't Melkhuisje in Hilversum in the Netherlands from 28 July until 3 August 1986 The draw comprised 32 players and 8 of them were seeded. Ricki Osterthun was the defending Dutch Open singles champion but lost in the second round. Seventh-seeded Thomas Muster won the title by defeating Jakob Hlasek in the final, 6–1, 6–3, 6–3.

## Seeds

* Miloslav Mečíř (quarterfinals)
* Emilio Sánchez (semifinals)
* Jakob Hlasek (final)
* (Withdrew)
* Paolo Canè (quarterfinals)
* Michiel Schapers (second round)
* Thomas Muster (champion)
* Marián Vajda (quarterfinals)

## 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 | Final | Final | Final | Final | Final |
| 7/WC | Thomas Muster | 6 | 6 | | | | | |
| | Menno Oosting | 1 | 0 | | | | | |
| | Menno Oosting | 1 | 0 | 7/WC | Thomas Muster | 6 | 6 | 6 |
| | | | | 3 | Jakob Hlasek | 1 | 3 | 3 |
| 3 | Jakob Hlasek | 6 | 7 | 3 | Jakob Hlasek | 1 | 3 | 3 |
| 2 | Emilio Sánchez | 4 | 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 | Miloslav Mečíř | 6 | 6 | | | | | | | | | | | | | | | |
| | Sergio Casal | 3 | 3 | | 1 | Miloslav Mečíř | 6 | 6 | | | | | | | | | | |
| WC | Carl Limberger | 3 | 6 | 3 | | Stanislav Birner | 0 | 3 | | | | | | | | | | |
| | Stanislav Birner | 6 | 3 | 6 | | | | | | 1 | Miloslav Mečíř | 6 | 6 | 5 | | | | |
| | David de Miguel | 2 | 2 | | | | | | | 7/WC | Thomas Muster | 4 | 7 | 7 | | | | |
| | Eduardo Bengoechea | 6 | 6 | | | Eduardo Bengoechea | 2 | 6 | 1 | | | | | | | | | |
| | Juan Antonio Rodríguez | 0 | 0 | | 7/WC | Thomas Muster | 6 | 1 | 6 | | | | | | | | | |
| 7/WC | Thomas Muster | 6 | 6 | | | | | | | | | | | | 7/WC | Thomas Muster | 6 | 6 |
| 3 | Tomáš Šmíd | 2 | 3 | | | | | | | | | | | | | Menno Oosting | 1 | 0 |
| | Ricki Osterthun | 6 | 6 | | | Ricki Osterthun | 6 | 3 | 4 | | | | | | | | | |
| | Andreas Maurer | 6 | 6 | | | Andreas Maurer | 4 | 6 | 6 | | | | | | | | | |
| | Mark Woodforde | 1 | 4 | | | | | | | | Andreas Maurer | 6 | 4 | 6 | | | | |
| | Menno Oosting | 6 | 6 | | | | | | | | Menno Oosting | 3 | 6 | 7 | | | | |
| | Pavel Složil | 4 | 2 | | | Menno Oosting | 4 | 6 | 7 | | | | | | | | | |
| | Michael Westphal | 4 | 4 | | 6 | Michiel Schapers | 6 | 2 | 6 | | | | | | | | | |
| 6 | Michiel Schapers | 6 | 6 | | | | | | | | | | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | Paolo Canè | 6 | 7 | | | | | | | | | | | | | | | |
| | Jeremy Bates | 0 | 6 | | 5 | Paolo Canè | 6 | 6 | | | | | | | | | | |
| Q | Jan-Willem Lodder | 6 | 6 | | Q | Jan-Willem Lodder | 1 | 3 | | | | | | | | | | |
| Q | Gustavo Tiberti | 4 | 1 | | | | | | | 5 | Paolo Canè | 4 | 6 | 1 | | | | |
| | Claudio Mezzadri | 6 | 6 | | | | | | | 3 | Jakob Hlasek | 6 | 3 | 6 | | | | |
| | Thierry Champion | 4 | 2 | | | Claudio Mezzadri | 6 | 5 | 2 | | | | | | | | | |
| Q | Christian Feenstra | 4 | 4 | | 3 | Jakob Hlasek | 4 | 7 | 6 | | | | | | | | | |
| 3 | Jakob Hlasek | 6 | 6 | | | | | | | | | | | | 3 | Jakob Hlasek | 6 | 7 |
| 8 | Marián Vajda | 6 | 6 | | | | | | | | | | | | 2 | Emilio Sánchez | 4 | 6 |
| | Peter Lindgren | 1 | 2 | | 8 | Marián Vajda | 7 | 6 | | | | | | | | | | |
| | Ronnie Båthman | 5 | 6 | 6 | | Ronnie Båthman | 6 | 4 | | | | | | | | | | |
| | Eduardo Masso | 7 | 1 | 3 | | | | | | 8 | Marián Vajda | 3 | 4 | | | | | |
| WC | Roland Stadler | 6 | 6 | | | | | | | 2 | Emilio Sánchez | 6 | 6 | | | | | |
| | Tore Meinecke | 1 | 4 | | WC | Roland Stadler | 3 | 6 | 4 | | | | | | | | | |
| Q | Carlos Castellan | 2 | 1 | | 2 | Emilio Sánchez | 6 | 2 | 6 | | | | | | | | | |
| 2 | Emilio Sánchez | 6 | 6 | | | | | | | | | | | | | | | |