# 1986 Toronto Indoor – Singles

Kevin Curren was the defending champion, but did not participate this year.
Joakim Nyström won the tournament, beating Milan Šrejber in the final, 6–1, 6–4.

## Seeds

* Joakim Nyström (champion)
* Aaron Krickstein (first round)
* Wojtek Fibak (first round)
* Jonathan Canter (semifinals)
* Christo Steyn (first round)
* Francisco Maciel (first round)
* Shahar Perkiss (second round)
* Mark Dickson (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 | Joakim Nyström | 7 | 6 | | | | | |
| 4 | Jonathan Canter | 6 | 3 | | | | | |
| 4 | Jonathan Canter | 6 | 3 | | 1 | Joakim Nyström | 6 | 6 |
| | | | | | Q | Milan Šrejber | 1 | 4 |
| | Peter Fleming | 2 | 7 | 3 | Q | Milan Šrejber | 1 | 4 |
| Q | Milan Šrejber | 6 | 6 | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | J Nyström | 6 | 4 | 7 | | | | | | | | | | | | | |
| | A Mansdorf | 4 | 6 | 5 | 1 | J Nyström | 6 | 6 | | | | | | | | | |
| | R Saad | 6 | 4 | 0 | WC | A Sznajder | 3 | 2 | | | | | | | | | |
| WC | A Sznajder | 3 | 6 | 6 | | | | | 1 | J Nyström | 2 | 6 | 6 | | | | |
| | J Bates | 6 | 6 | | | | | | | J Svensson | 6 | 4 | 3 | | | | |
| | S Bonneau | 2 | 2 | | | J Bates | 1 | 4 | | | | | | | | | |
| | J Svensson | 2 | 6 | 6 | | J Svensson | 6 | 6 | | | | | | | | | |
| 8 | M Dickson | 6 | 1 | 2 | | | | | | | | | | 1 | J Nyström | 7 | 6 |
| 4 | J Canter | 4 | 6 | 6 | | | | | | | | | | 4 | J Canter | 6 | 3 |
| | M Flur | 6 | 1 | 4 | 4 | J Canter | 6 | 7 | | | | | | | | | |
| | S Eriksson | 3 | 7 | 3 | | F Segărceanu | 4 | 5 | | | | | | | | | |
| | F Segărceanu | 6 | 6 | 6 | | | | | 4 | J Canter | 7 | 6 | | | | | |
| Q | C Dunk | 6 | 6 | | | | | | | B Green | 6 | 4 | | | | | |
| | R Simpson | 4 | 3 | | Q | C Dunk | 1 | 5 | | | | | | | | | |
| | B Green | 6 | 7 | | | B Green | 6 | 7 | | | | | | | | | |
| 5 | C Steyn | 2 | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | S Perkiss | 4 | 6 | 6 | | | | | | | | | | | | | | |
| | B Orešar | 6 | 2 | 1 | 7 | S Perkiss | 1 | 4 | | | | | | | | | | |
| Q | E Edwards | 3 | 4 | | | G Michibata | 6 | 6 | | | | | | | | | | |
| | G Michibata | 6 | 6 | | | | | | | | G Michibata | 3 | 1 | | | | | |
| | M Wostenholme | 6 | 4 | 4 | | | | | | | P Fleming | 6 | 6 | | | | | |
| | P Fleming | 2 | 6 | 6 | | P Fleming | 6 | 3 | 6 | | | | | | | | | |
| | L Shiras | 6 | 7 | | | L Shiras | 4 | 6 | 4 | | | | | | | | | |
| 3 | W Fibak | 3 | 6 | | | | | | | | | | | | P Fleming | 2 | 7 | 3 |
| 6 | F Maciel | 2 | 1 | | | | | | | | | | | Q | M Šrejber | 6 | 6 | 6 |
| Q | M Šrejber | 6 | 6 | | Q | M Šrejber | 6 | 6 | 6 | | | | | | | | | |
| WC | H McDadi | 4 | 5 | | | C Kirmayr | 2 | 7 | 4 | | | | | | | | | |
| | C Kirmayr | 6 | 7 | | | | | | | Q | M Šrejber | 6 | 7 | | | | | |
| Q | D Saltz | 4 | 4 | | | | | | | | G Layendecker | 2 | 6 | | | | | |
| | R Osterthun | 6 | 6 | | | R Osterthun | 6 | 3 | 4 | | | | | | | | | |
| | G Layendecker | 3 | 6 | 7 | | G Layendecker | 4 | 6 | 6 | | | | | | | | | |
| 2 | A Krickstein | 6 | 3 | 6 | | | | | | | | | | | | | | |