# 1986 Donnay Indoor Championships – Singles

Anders Järryd was the defending champion, but lost in the quarterfinals this year.
Mats Wilander won the title, defeating Broderick Dyke 6–2, 6–3 in the final.

## Seeds

* Mats Wilander (champion)
* Boris Becker (first round)
* Joakim Nyström (semifinals)
* Anders Järryd (quarterfinals)
* Miloslav Mečíř (semifinals)
* Kevin Curren (quarterfinals)
* Henri Leconte (first round)
* Henrik Sundström (first 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 |
| 1 | Mats Wilander | 2 | 6 | 6 | | | | |
| 3 | Joakim Nyström | 6 | 4 | 2 | | | | |
| 3 | Joakim Nyström | 6 | 4 | 2 | 1 | Mats Wilander | 6 | 6 |
| | | | | | SE | Broderick Dyke | 2 | 3 |
| 5 | Miloslav Mečíř | 2 | 3 | | SE | Broderick Dyke | 2 | 3 |
| SE | Broderick Dyke | 6 | 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 | Semifinals |
| 1 | M Wilander | 6 | 6 | | | | | | | | | | | | | | | | |
| Q | J Svensson | 4 | 4 | | 1 | M Wilander | 7 | 6 | | | | | | | | | | | |
| | S Živojinović | 6 | 2 | 6 | | S Živojinović | 6 | 4 | | | | | | | | | | | |
| | H Günthardt | 2 | 6 | 3 | | | | | | 1 | M Wilander | 4 | 6 | 6 | | | | | |
| | M Dickson | 3 | 6 | 4 | | | | | | | J Canter | 6 | 3 | 2 | | | | | |
| WC | K Demuynck | 6 | 4 | 6 | WC | K Demuynck | 5 | 1 | | | | | | | | | | | |
| | J Canter | 6 | 6 | | | J Canter | 7 | 6 | | | | | | | | | | | |
| 7 | H Leconte | 4 | 4 | | | | | | | | | | | | 1 | M Wilander | 2 | 6 | 6 |
| 3 | J Nyström | 6 | 6 | | | | | | | | | | | | 3 | J Nyström | 6 | 4 | 2 |
| | P Lundgren | 1 | 2 | | 3 | J Nyström | 6 | 3 | 7 | | | | | | | | | | |
| | S Casal | 6 | 2 | | Q | J Bates | 1 | 6 | 5 | | | | | | | | | | |
| Q | J Bates | 7 | 6 | | | | | | | 3 | J Nyström | 6 | 6 | | | | | | |
| | J Gunnarsson | 1 | 6 | | | | | | | 6 | K Curren | 1 | 4 | | | | | | |
| | T Šmíd | 6 | 7 | | | T Šmíd | 6 | 3 | | | | | | | | | | | |
| Q | C Hooper | 6 | 7 | 6 | 6 | K Curren | 7 | 6 | | | | | | | | | | | |
| 6 | K Curren | 7 | 6 | 7 | | | | | | | | | | | | | | | |

### 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 | M Mečíř | 6 | 6 | | | | | | | | | | | | | | | |
| SE | M Schapers | 4 | 2 | | 5 | M Mečíř | 6 | 6 | | | | | | | | | | |
| | E Sánchez | 6 | 6 | | | E Sánchez | 3 | 2 | | | | | | | | | | |
| | R Agénor | 4 | 4 | | | | | | | 5 | M Mečíř | 6 | 6 | | | | | |
| WC | V Gerulaitis | 3 | 1 | | | | | | | 4 | A Järryd | 4 | 3 | | | | | |
| | M Vajda | 6 | 6 | | | M Vajda | 6 | 0 | 3 | | | | | | | | | |
| | B Teacher | 1 | 2 | | 4 | A Järryd | 3 | 6 | 6 | | | | | | | | | |
| 4 | A Järryd | 6 | 6 | | | | | | | | | | | | 5 | M Mečíř | 2 | 3 |
| 8/WC | H Sundström | 1 | 0 | | | | | | | | | | | | SE | B Dyke | 6 | 6 |
| | G Forget | 6 | 6 | | | G Forget | 6 | 6 | | | | | | | | | | |
| Q | T Högstedt | 1 | 6 | 3 | | J Hlasek | 3 | 4 | | | | | | | | | | |
| | J Hlasek | 6 | 1 | 6 | | | | | | | G Forget | 1 | 6 | 6 | | | | |
| | L Pimek | 6 | 7 | | | | | | | SE | B Dyke | 6 | 2 | 7 | | | | |
| | W Fibak | 4 | 5 | | | L Pimek | 6 | 5 | 3 | | | | | | | | | |
| SE | B Dyke | 6 | 6 | | SE | B Dyke | 3 | 7 | 6 | | | | | | | | | |
| 2 | B Becker | 1 | 3 | | | | | | | | | | | | | | | |