# 1986 Tokyo Indoor – Singles

Ivan Lendl was the defending champion, but lost in the semifinals this year.
Boris Becker won the tournament, beating Stefan Edberg in the final, 7–6, 6–1.

## Seeds

* Ivan Lendl (semifinals)
* Boris Becker (champion)
* Stefan Edberg (final)
* Jimmy Connors (semifinals)
* Andrés Gómez (second round)
* David Pate (quarterfinals)
* Aaron Krickstein (second round)
* Ulf Stenlund (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 |
| 1 | Ivan Lendl | 5 | 1 | | | | | |
| 3 | Stefan Edberg | 7 | 6 | | | | | |
| 3 | Stefan Edberg | 7 | 6 | | 3 | Stefan Edberg | 6 | 1 |
| | | | | | 2 | Boris Becker | 7 | 6 |
| 4 | Jimmy Connors | 6 | 6 | 3 | 2 | Boris Becker | 7 | 6 |
| 2 | Boris Becker | 7 | 2 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | I Lendl | 6 | 6 | | | | | | | | | | | | | | |
| WC | S Matsuoka | 1 | 1 | | 1 | I Lendl | 6 | 6 | | | | | | | | | |
| | P McNamee | 7 | 6 | 6 | | P McNamee | 2 | 3 | | | | | | | | | |
| Q | V Wilder | 6 | 7 | 3 | | | | | | 1 | I Lendl | 6 | 6 | | | | |
| | S Davis | 6 | 6 | | | | | | | | S Davis | 3 | 3 | | | | |
| SE | J Carlsson | 1 | 1 | | | S Davis | 7 | 7 | | | | | | | | | |
| | M Davis | 7 | 3 | 6 | 7 | A Krickstein | 6 | 6 | | | | | | | | | |
| 7 | A Krickstein | 6 | 6 | 7 | | | | | | | | | | 1 | I Lendl | 5 | 1 |
| 3 | S Edberg | 6 | 6 | | | | | | | | | | | 3 | S Edberg | 7 | 6 |
| | J Arias | 2 | 2 | | 3 | S Edberg | 4 | 6 | 6 | | | | | | | | |
| SE | K Jones | 6 | 6 | 6 | SE | K Jones | 6 | 1 | 0 | | | | | | | | |
| | J Canter | 7 | 3 | 4 | | | | | | 3 | S Edberg | 7 | 6 | | | | |
| WC | F Fukui | 6 | 6 | | | | | | | 6 | D Pate | 6 | 1 | | | | |
| WC | Masayoshi Takeyari | 4 | 3 | | WC | F Fukui | 3 | 2 | | | | | | | | | |
| | M Freeman | 3 | 6 | | 6 | D Pate | 6 | 6 | | | | | | | | | |
| 6 | D Pate | 6 | 7 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | A Gómez | 1 | 6 | 6 | | | | | | | | | | | | | |
| | R Krishnan | 6 | 4 | 3 | 5 | A Gómez | 4 | 3 | | | | | | | | | |
| | E Jelen | 7 | 6 | | | E Jelen | 6 | 6 | | | | | | | | | |
| Q | K Flach | 6 | 1 | | | | | | | E Jelen | 6 | 3 | | | | | |
| Q | D Rostagno | 1 | 1 | | | | | | 4 | J Connors | 7 | 6 | | | | | |
| Q | B Scanlon | 6 | 6 | | Q | B Scanlon | 3 | 6 | | | | | | | | | |
| | M Leach | 1 | 6 | 2 | 4 | J Connors | 6 | 7 | | | | | | | | | |
| 4 | J Connors | 6 | 3 | 6 | | | | | | | | | 4 | J Connors | 6 | 6 | 3 |
| 8 | U Stenlund | 1 | 6 | 6 | | | | | | | | | 2 | B Becker | 7 | 2 | 6 |
| | B Schultz | 6 | 2 | 3 | 8 | U Stenlund | 1 | 2 | | | | | | | | | |
| | T Witsken | 6 | 3 | 3 | | P Annacone | 6 | 6 | | | | | | | | | |
| | P Annacone | 3 | 6 | 6 | | | | | | P Annacone | 2 | 4 | | | | | |
| | J Yzaga | 6 | 6 | | | | | | 2 | B Becker | 6 | 6 | | | | | |
| | G Holmes | 4 | 4 | | | J Yzaga | 3 | 2 | | | | | | | | | |
| | M Anger | 3 | 4 | | 2 | B Becker | 6 | 6 | | | | | | | | | |
| 2 | B Becker | 6 | 6 | | | | | | | | | | | | | | |