# 2006 AIG Japan Open Tennis Championships – Men's singles

Wesley Moodie was the defending champion, but lost in the third round to Roger Federer.
First-seeded Roger Federer won in the final 6–3, 6–3, against Tim Henman.

## Seeds

All seeds receive a bye into the second round.
* Roger Federer (champion)
* Tommy Robredo (quarterfinals)
* Mario Ančić (quarterfinals)
* Andy Murray (second round)
* Jarkko Nieminen (quarterfinals)
* Dmitry Tursunov (third round)
* Robby Ginepri (second round)
* Paradorn Srichaphan (second round)
* Hyung-taik Lee (semifinals)
* Tim Henman (final)
* Björn Phau (second round)
* Juan Mónaco (third round)
* Wesley Moodie (third round)
* Benjamin Becker (semifinals)
* Vince Spadea (third round)
* Paul Goldstein (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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Roger Federer | 4 | 7 | 7$^7$ | | | | | | | | |
| WC | Takao Suzuki | 6 | 5 | 6$^3$ | | | | | | | | |
| WC | Takao Suzuki | 6 | 5 | 6$^3$ | 1 | Roger Federer | 6 | 6 | | | | |
| | | | | | 14 | Benjamin Becker | 3 | 4 | | | | |
| 14 | Benjamin Becker | 6$^5$ | 7$^8$ | 6 | 14 | Benjamin Becker | 3 | 4 | | | | |
| 5 | Jarkko Nieminen | 7$^7$ | 6$^6$ | 4 | | | | | | | | |
| 5 | Jarkko Nieminen | 7$^7$ | 6$^6$ | 4 | | | | | 1 | Roger Federer | 6 | 6 |
| | | | | | | | | | 10 | Tim Henman | 3 | 3 |
| 10 | Tim Henman | 6 | 6 | | | | | | | | | | 10 | Tim Henman | 3 | 3 |
| 3 | Mario Ančić | 2 | 2 | | | | | | | | | |
| 3 | Mario Ančić | 2 | 2 | | 10 | Tim Henman | 6 | 7$^7$ | | | | |
| | | | | | 9 | Hyung-taik Lee | 4 | 6$^5$ | | | | |
| 9 | Hyung-taik Lee | 7$^7$ | 4 | 6 | 9 | Hyung-taik Lee | 4 | 6$^5$ | | | | |
| 2 | Tommy Robredo | 6$^3$ | 6 | 1 | | | | | | | | |

### 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | R Federer | 7$^7$ | 7$^7$ | | | | | | | | | | | |
| | F Vicente | 7$^7$ | 4 | 2 | Q | V Troicki | 6$^2$ | 6$^3$ | | | | | | | | | | | |
| Q | V Troicki | 6$^4$ | 6 | 6 | | | | | | 1 | R Federer | 6 | 6 | | | | | | |
| | S Galvani | 3 | 6 | 5 | | | | | | 13 | W Moodie | 2 | 1 | | | | | | |
| | S Koubek | 6 | 4 | 7 | | S Koubek | 3 | 4 | | | | | | | | | | | |
| | | | | | 13 | W Moodie | 6 | 6 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 1 | R Federer | 4 | 7 | 7$^7$ |
| | | | | | | | | | | | | | | | WC | T Suzuki | 6 | 5 | 6$^3$ |
| | | | | | 11 | B Phau | 4 | 4 | | | | | | | | | | | |
| | A Waske | 6 | 6 | | | A Waske | 6 | 6 | | | | | | | | | | | |
| Q | T Chaen | 4 | 4 | | | | | | | | A Waske | 7$^7$ | 6$^{10}$ | 1 | | | | | |
| | S Greul | 2 | 2 | | | | | | | WC | T Suzuki | 6$^4$ | 7$^{12}$ | 6 | | | | | |
| WC | T Suzuki | 6 | 6 | | WC | T Suzuki | 7$^7$ | 6$^5$ | 6 | | | | | | | | | | |
| | | | | | 8 | P Srichaphan | 6$^4$ | 7$^7$ | 4 | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First 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 | A Murray | 3 | 6$^1$ | | | | | | | | | | |
| | R Vik | 6 | 4 | 4 | | J Novák | 6 | 7$^7$ | | | | | | | | | | |
| | J Novák | 4 | 6 | 6 | | | | | | J Novák | 6 | 3 | 6$^4$ | | | | | |
| | D Udomchoke | 7$^7$ | 6 | | | | | | 14 | B Becker | 3 | 6 | 7$^7$ | | | | | |
| Q | M Čilić | 6$^3$ | 3 | | | D Udomchoke | 2 | 1 | | | | | | | | | | |
| | | | | | 14 | B Becker | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | 14 | B Becker | 6$^5$ | 7$^8$ | 6 |
| | | | | | | | | | | | | | | 5 | J Nieminen | 7$^7$ | 6$^6$ | 4 |
| | | | | | 12 | J Mónaco | 7$^7$ | 6 | | | | | | | | | | |
| | E Massa | 6 | 6 | | | E Massa | 6$^4$ | 3 | | | | | | | | | | |
| | K Economidis | 1 | 3 | | | | | | 12 | J Mónaco | 2 | 3 | | | | | | |
| LL | L Burgsmüller | 6$^5$ | 7$^9$ | 7$^7$ | | | | | 5 | J Nieminen | 6 | 6 | | | | | | |
| Q | W Arthurs | 7$^7$ | 6$^7$ | 6$^3$ | LL | L Burgsmüller | 5 | 6$^2$ | | | | | | | | | | |
| | | | | | 5 | J Nieminen | 7 | 7$^7$ | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 7 | R Ginepri | 2 | 2 | | | | | | | | | |
| WC | G Soeda | 3 | 1 | | | JM del Potro | 6 | 6 | | | | | | | | | |
| | JM del Potro | 6 | 6 | | | | | | | JM del Potro | 6$^3$ | 3 | | | | | |
| | F Dancevic | 6 | 6 | | | | | | 10 | T Henman | 7$^7$ | 6 | | | | | |
| | M Daniel | 4 | 4 | | | F Dancevic | 2 | 1 | | | | | | | | | |
| | | | | | 10 | T Henman | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 10 | T Henman | 6 | 6 |
| | | | | | | | | | | | | | | 3 | M Ančić | 2 | 2 |
| | | | | | 16 | P Goldstein | 3 | 2 | | | | | | | | | |
| | R Schüttler | 6 | 6 | | | R Schüttler | 6 | 6 | | | | | | | | | |
| | M Berrer | 2 | 1 | | | | | | | R Schüttler | 2 | 6 | 4 | | | | |
| WC | G Motomura | 7$^7$ | 3 | 2 | | | | | 3 | M Ančić | 6 | 4 | 6 | | | | |
| | K Carlsen | 6$^5$ | 6 | 6 | | K Carlsen | 1 | 4 | | | | | | | | | |
| | | | | | 3 | M Ančić | 6 | 6 | | | | | | | | | |

#### Section 4

| 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 |
| | | | | 6 | D Tursunov | 6 | 5 | 7 | | | | | | | | | | |
| | J Wang | 6 | 6 | | J Wang | 3 | 7 | 5 | | | | | | | | | | |
| | K Kim | 3 | 1 | | | | | | 6 | D Tursunov | 4 | 6 | 4 | | | | | |
| | R de Voest | 3 | 4 | | | | | | 9 | Lee H-T | 6 | 2 | 6 | | | | | |
| | K Pless | 6 | 6 | | K Pless | 5 | 1 | | | | | | | | | | | |
| | | | | 9 | Lee H-T | 7 | 6 | | | | | | | | | | | |
| | | | | | | | | | | | | | | 9 | Lee H-T | 7$^7$ | 4 | 6 |
| | | | | | | | | | | | | | | 2 | T Robredo | 6$^3$ | 6 | 1 |
| | | | | 16 | V Spadea | 2 | 6 | 6 | | | | | | | | | | |
| Q | T Chen | 2 | 1 | WC | S Iwabuchi | 6 | 2 | 0 | | | | | | | | | | |
| WC | S Iwabuchi | 6 | 6 | | | | | | 16 | V Spadea | 4 | 6$^9$ | | | | | | |
| Q | Y-h Lu | 6 | 6 | | | | | | 2 | T Robredo | 6 | 7$^{11}$ | | | | | | |
| | R Delgado | 2 | 3 | Q | Y-h Lu | 4 | 1 | | | | | | | | | | | |
| | | | | 2 | T Robredo | 6 | 6 | | | | | | | | | | | |