# 1983 Japan Open Tennis Championships – Men's singles

Jimmy Arias was the defending champion, but did not participate this year.
Eliot Teltscher won the title, defeating Andrés Gómez in the final, 7–5, 3–6, 6–1.

## Seeds

* Andrés Gómez (final)
* Eliot Teltscher (champion)
* Henri Leconte (third round)
* Robert Van't Hof (second round)
* Gianni Ocleppo (quarterfinals)
* Thomas Högstedt (second round)
* Scott Davis (second round)
* Christophe Roger-Vasselin (quarterfinals)
* Sammy Giammalva Jr. (second round)
* Mike De Palmer (third round)
* Brad Gilbert (third round)
* Francisco González (first round)
* Pat DuPré (first round)
* Tom Gullikson (semifinals)
* Thierry Tulasne (first round)
* Nduka Odizor (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 | Final |
| 1 | Andrés Gómez | 6 | 6 | | | | | | |
| 14 | Tom Gullikson | 3 | 2 | | | | | | |
| 14 | Tom Gullikson | 3 | 2 | | 1 | Andrés Gómez | 5 | 6 | 1 |
| | | | | | 2 | Eliot Teltscher | 7 | 3 | 6 |
| | Tim Gullikson | 1 | 6 | 2 | 2 | Eliot Teltscher | 7 | 3 | 6 |
| 2 | Eliot Teltscher | 6 | 4 | 6 | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 1 | A Gómez | 7 | 6 | | | | | | | | | | | | | | |
| | J Bailey | 5 | 3 | | 1 | A Gómez | 6 | 7 | | | | | | | | | |
| Q | T Kuramitsu | 2 | 1 | | | V Winitsky | 3 | 6 | | | | | | | | | |
| | V Winitsky | 6 | 6 | | | | | | | 1 | A Gómez | 6 | 7 | | | | |
| | B Dyke | 0 | 6 | 1 | | | | | | 11 | B Gilbert | 2 | 5 | | | | |
| | M Freeman | 6 | 2 | 6 | | M Freeman | 4 | 3 | | | | | | | | | |
| | B Kleege | 3 | 6 | | 11 | B Gilbert | 6 | 6 | | | | | | | | | |
| 11 | B Gilbert | 6 | 7 | | | | | | | | | | | 1 | A Gómez | 6 | 7 |
| 16 | N Odizor | 2 | 6 | | | | | | | | | | | | R Krishnan | 2 | 5 |
| | Craig Miller | 6 | 7 | | | Craig Miller | 7 | 1 | 4 | | | | | | | | |
| | M Davis | 2 | 5 | | | S Meister | 6 | 6 | 6 | | | | | | | | |
| | S Meister | 6 | 7 | | | | | | | | S Meister | 3 | 2 | | | | |
| | H Shirato | 0 | 2 | | | | | | | | R Krishnan | 6 | 6 | | | | |
| | R Krishnan | 6 | 6 | | | R Krishnan | 3 | 6 | 1 | | | | | | | | |
| Q | L Warder | 2 | 4 | | 6 | T Högstedt | 6 | 3 | 1 | | | | | | | | |
| 6 | T Högstedt | 6 | 6 | | | | | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 4 | R Van't Hof | 7 | 6 | | | | | | | | | | | | | | | |
| | J Austin | 5 | 3 | | 4 | R Van't Hof | 4 | 6 | 6 | | | | | | | | | |
| | C Strode | 7 | 6 | | | C Strode | 6 | 4 | 7 | | | | | | | | | |
| | M Anger | 6 | 4 | | | | | | | | C Strode | 4 | 6 | 4 | | | | |
| | P Rennert | 4 | 0$^r$ | | | | | | | 14 | To Gullikson | 6 | 3 | 6 | | | | |
| | R Frawley | 6 | 1 | | | R Frawley | 7 | 3 | 6 | | | | | | | | | |
| | T Yonezawa | 2 | 4 | | 14 | To Gullikson | 6 | 6 | 7 | | | | | | | | | |
| 14 | To Gullikson | 6 | 6 | | | | | | | | | | | | 14 | To Gullikson | 6 | 7 |
| 10 | M De Palmer | 7 | 6 | | | | | | | | | | | | 8 | C Roger-Vasselin | 3 | 5 |
| | T Fukui | 5 | 2 | | 10 | M De Palmer | 6 | 3 | 6 | | | | | | | | | |
| | J Levine | 3 | 7 | 1 | | T Cain | 2 | 6 | 3 | | | | | | | | | |
| | T Cain | 6 | 6 | 6 | | | | | | 10 | M De Palmer | 6 | 5 | 2 | | | | |
| | T Waltke | 6 | 2 | 6 | | | | | | 8 | C Roger-Vasselin | 3 | 7 | 6 | | | | |
| | J Gurfein | 2 | 6 | 7 | | J Gurfein | 7 | 6 | 3 | | | | | | | | | |
| | S Shiraishi | 6 | 3 | 1 | 8 | C Roger-Vasselin | 6 | 7 | 6 | | | | | | | | | |
| 8 | C Roger-Vasselin | 4 | 6 | 6 | | | | | | | | | | | | | | |

#### Section 3

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 5 | G Ocleppo | 6 | 6 | | | | | | | | | | | | | | |
| | S Sakamoto | 2 | 4 | 5 | G Ocleppo | 6 | 7 | 6 | | | | | | | | | |
| | R Gehring | 6 | 7 | | R Gehring | 7 | 6 | 4 | | | | | | | | | |
| | MS Strode | 1 | 5 | | | | | | 5 | G Ocleppo | 6 | 6 | | | | | |
| | W Hampson | 6 | 2 | | | | | | | T Nelson | 4 | 3 | | | | | |
| | T Nelson | 7 | 6 | | T Nelson | 6 | 6 | | | | | | | | | | |
| Q | D Dowlen | 3 | 2 | 9 | S Giammalva, Jr | 2 | 3 | | | | | | | | | | |
| 9 | S Giammalva, Jr | 6 | 6 | | | | | | | | | | 5 | G Ocleppo | 6 | 2 | 2 |
| 12 | F González | 6 | 5 | | | | | | | | | | | Ti Gullikson | 1 | 6 | 6 |
| | Ti Gullikson | 7 | 7 | | Ti Gullikson | 6 | 6 | | | | | | | | | | |
| | S Nishio | 4 | 4 | Q | K Flach | 3 | 1 | | | | | | | | | | |
| Q | K Flach | 6 | 6 | | | | | | | Ti Gullikson | 6 | 6 | | | | | |
| | M Tideman | 1 | 0 | | | | | | 3 | H Leconte | 4 | 2 | | | | | |
| Q | S McCain | 6 | 6 | Q | S McCain | 4 | 6 | | | | | | | | | | |
| | S Brawley | 3 | 0 | 3 | H Leconte | 6 | 7 | | | | | | | | | | |
| 3 | H Leconte | 6 | 6 | | | | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 7 | S Davis | 6 | 7 | | | | | | | | | | | | | | | |
| Q | M Vines | 1 | 5 | | 7 | S Davis | 6 | 4 | | | | | | | | | | |
| | L Stefanki | 3 | 6 | 6 | | L Stefanki | 7 | 6 | | | | | | | | | | |
| | G Michibata | 6 | 3 | 4 | | | | | | | L Stefanki | 6 | 6 | 7 | | | | |
| Q | R Seguso | 6 | 6 | 6 | | | | | | Q | R Seguso | 3 | 7 | 6 | | | | |
| | R Meyer | 3 | 7 | 4 | Q | R Seguso | 7 | 7 | | | | | | | | | | |
| | D Pate | 6 | 6 | | | D Pate | 6 | 5 | | | | | | | | | | |
| 13 | P DuPré | 4 | 4 | | | | | | | | | | | | | L Stefanki | 2 | 3 |
| 15 | T Tulasne | 6 | 6 | | | | | | | | | | | | 2 | E Teltscher | 6 | 6 |
| | G Goven | 7 | 7 | | | G Goven | 6 | 3 | 6 | | | | | | | | | |
| | V Amaya | 3 | 7 | 6 | | V Amaya | 3 | 6 | 1 | | | | | | | | | |
| | G Holmes | 6 | 6 | 2 | | | | | | | G Goven | 1 | 1 | | | | | |
| | L Bourne | 7 | 0 | 2 | | | | | | 2 | E Teltscher | 6 | 6 | | | | | |
| | S Menon | 6 | 6 | 6 | | S Menon | 0 | 1 | | | | | | | | | | |
| | A Andrews | 1 | 3 | | 2 | E Teltscher | 6 | 6 | | | | | | | | | | |
| 2 | E Teltscher | 6 | 6 | | | | | | | | | | | | | | | |