# 1994 Japan Open Tennis Championships – Men's singles

First-seeded Pete Sampras was the defending champion, and won the title again defeating Michael Chang in the final 6–4, 6–2.

## Seeds

The top eight seeds received a bye into the second round.
* Pete Sampras (champion)
* Michael Chang (final)
* Boris Becker (semifinals)
* Ivan Lendl (quarterfinals)
* Aaron Krickstein (third round)
* Brad Gilbert (quarterfinals)
* Patrick Rafter (quarterfinals)
* Amos Mansdorf (second round)
* Jonathan Stark (third round)
* Patrick McEnroe (third round)
* Henrik Holm (semifinals)
* Daniel Vacek (third round)
* Greg Rusedski (second round)
* Jamie Morgan (first round)
* Javier Frana (first round)
* Byron Black (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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Pete Sampras | 6 | 5 | 6 | | | | | | | | |
| 7 | Patrick Rafter | 1 | 7 | 1 | | | | | | | | |
| 7 | Patrick Rafter | 1 | 7 | 1 | 1 | Pete Sampras | 6 | 6 | | | | |
| | | | | | 11 | Henrik Holm | 2 | 1 | | | | |
| 4 | Ivan Lendl | 7 | 1 | 2 | 11 | Henrik Holm | 2 | 1 | | | | |
| 11 | Henrik Holm | 5 | 6 | 6 | | | | | | | | |
| 11 | Henrik Holm | 5 | 6 | 6 | | | | | 1 | Pete Sampras | 6 | 6 |
| | | | | | | | | | 2 | Michael Chang | 4 | 2 |
| 6 | Brad Gilbert | 3 | 0 | | | | | | | | | | 2 | Michael Chang | 4 | 2 |
| 3 | Boris Becker | 6 | 6 | | | | | | | | | |
| 3 | Boris Becker | 6 | 6 | | 3 | Boris Becker | 6$^2$ | 2 | | | | |
| | | | | | 2 | Michael Chang | 7$^7$ | 6 | | | | |
| | David Wheaton | 6$^3$ | 3 | | 2 | Michael Chang | 7$^7$ | 6 | | | | |
| 2 | Michael Chang | 7$^7$ | 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 | Quarterfinals |
| | | | | | 1 | P Sampras | 6 | 7$^7$ | | | | | | | | | | |
| | A Olhovskiy | 6 | 6 | | | A Olhovskiy | 3 | 6$^5$ | | | | | | | | | | |
| WC | Y Yamamoto | 4 | 4 | | | | | | | 1 | P Sampras | 6 | 6 | | | | | |
| Q | T Henman | 6 | 6 | | | | | | | Q | T Henman | 1 | 2 | | | | | |
| Q | K Jones | 2 | 3 | | Q | T Henman | 2 | 7$^7$ | 6 | | | | | | | | | |
| | D Cahill | 6 | 6 | | | D Cahill | 6 | 6$^5$ | 1 | | | | | | | | | |
| 15 | J Frana | 2 | 0 | | | | | | | | | | | 1 | P Sampras | 6 | 5 | 6 |
| 10 | P McEnroe | 7$^8$ | 6 | | | | | | | | | | | 7 | P Rafter | 1 | 7 | 1 |
| | O Camporese | 6$^6$ | 2 | | 10 | P McEnroe | 7$^7$ | 6 | | | | | | | | | | |
| | J Bates | 1 | 7 | 3 | | J Tarango | 6$^5$ | 4 | | | | | | | | | | |
| | J Tarango | 6 | 5 | 6 | | | | | | 10 | P McEnroe | 3 | 2 | | | | | |
| Q | T Högstedt | 4 | 6 | 6 | | | | | | 7 | P Rafter | 6 | 6 | | | | | |
| | A Järryd | 6 | 4 | 4 | Q | T Högstedt | 6$^5$ | 2 | | | | | | | | | | |
| | | | | | 7 | P Rafter | 7$^7$ | 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 | Quarterfinals |
| | | | | | 4 | I Lendl | 6 | 6 | | | | | | | | | | | |
| WC | G Motomura | 6 | 6$^1$ | 2 | | S Lareau | 1 | 4 | | | | | | | | | | | |
| | S Lareau | 4 | 7$^7$ | 6 | | | | | | 4 | I Lendl | 7$^{10}$ | 7$^9$ | | | | | | |
| | J Björkman | 6 | 6 | | | | | | | | J Björkman | 6$^8$ | 6$^7$ | | | | | | |
| WC | T Mori | 1 | 3 | | | J Björkman | 7 | 4 | 7$^7$ | | | | | | | | | | |
| | N Borwick | 5 | 1 | | 13 | G Rusedski | 5 | 6 | 6$^5$ | | | | | | | | | | |
| 13 | G Rusedski | 7 | 6 | | | | | | | | | | | | 4 | I Lendl | 7 | 1 | 2 |
| 11 | H Holm | 4 | 6 | 6 | | | | | | | | | | | 11 | H Holm | 5 | 6 | 6 |
| WC | R Tsujino | 6 | 1 | 2 | 11 | H Holm | 7 | 6 | | | | | | | | | | | |
| | G Raoux | 6 | 6 | | | G Raoux | 5 | 4 | | | | | | | | | | | |
| WC | K Masuda | 4 | 2 | | | | | | | 11 | H Holm | 4 | 6 | 6 | | | | | |
| | G Pozzi | 7$^7$ | 6 | | | | | | | 5 | A Krickstein | 6 | 3 | 2 | | | | | |
| | A Antonitsch | 6$^4$ | 1 | | | G Pozzi | 1 | 1 | | | | | | | | | | | |
| | | | | | 5 | A Krickstein | 6 | 6 | | | | | | | | | | | |

### Bottom half
#### Section 3

| 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 |
| | | | | | 6 | B Gilbert | 4 | 6 | 7$^7$ | | | | | | | | | |
| | J Siemerink | 4 | 4 | | Q | M Tebbutt | 6 | 4 | 6$^2$ | | | | | | | | | |
| Q | M Tebbutt | 6 | 6 | | | | | | | 6 | B Gilbert | 7$^8$ | 6$^3$ | 6 | | | | |
| | M Ruah | 4 | 1 | | | | | | | 12 | D Vacek | 6$^6$ | 7$^7$ | 3 | | | | |
| | R Weiss | 6 | 6 | | | R Weiss | 1 | 4 | | | | | | | | | | |
| | J Renzenbrink | 4 | 4 | | 12 | D Vacek | 6 | 6 | | | | | | | | | | |
| 12 | D Vacek | 6 | 6 | | | | | | | | | | | | 6 | B Gilbert | 3 | 0 |
| 14 | J Morgan | 6 | 6$^2$ | 4 | | | | | | | | | | | 3 | B Becker | 6 | 6 |
| Q | L Gloria | 3 | 7$^7$ | 6 | Q | L Gloria | 2 | 3 | | | | | | | | | | |
| | K Carlsen | 6 | 5 | 6 | | K Carlsen | 6 | 6 | | | | | | | | | | |
| Q | B-s Kim | 1 | 7 | 1 | | | | | | | K Carlsen | 4 | 5 | | | | | |
| | A Mronz | 5 | 3 | | | | | | | 3 | B Becker | 6 | 7 | | | | | |
| | S Simian | 7 | 6 | | | S Simian | 3 | 6$^5$ | | | | | | | | | | |
| | | | | | 3 | B Becker | 6 | 7$^7$ | | | | | | | | | | |

#### 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 |
| | | | | | 8 | A Mansdorf | 3 | 7 | 1 | | | | | | | | | |
| | D Wheaton | 6 | 6 | | | D Wheaton | 6 | 5 | 6 | | | | | | | | | |
| | M Petchey | 1 | 4 | | | | | | | | D Wheaton | 6 | 6$^2$ | 6 | | | | |
| Q | D Pate | 6 | 1 | 6 | | | | | | 9 | J Stark | 2 | 7$^7$ | 3 | | | | |
| | S Matsuoka | 4 | 6 | 3 | Q | D Pate | 1 | 0 | | | | | | | | | | |
| | M Damm | 6 | 3 | 3 | 9 | J Stark | 6 | 6 | | | | | | | | | | |
| 9 | J Stark | 3 | 6 | 6 | | | | | | | | | | | | D Wheaton | 6$^3$ | 3 |
| 16 | B Black | 4 | 6 | 3 | | | | | | | | | | | 2 | M Chang | 7$^7$ | 6 |
| | H Dreekmann | 6 | 3 | 6 | | H Dreekmann | 3 | 3 | | | | | | | | | | |
| | C Adams | 4 | 6 | 6 | | C Adams | 6 | 6 | | | | | | | | | | |
| | C Caratti | 6 | 3 | 4 | | | | | | | C Adams | 1 | 3 | | | | | |
| | M Zoecke | 3 | 0 | | | | | | | 2 | M Chang | 6 | 6 | | | | | |
| | D Flach | 6 | 6 | | | D Flach | 1 | 6$^2$ | | | | | | | | | | |
| | | | | | 2 | M Chang | 6 | 7$^7$ | | | | | | | | | | |