# 2010 Rakuten Japan Open Tennis Championships – Singles

Jo-Wilfried Tsonga was the defending champion, but was eliminated in the first round by Jarkko Nieminen. Top seed Rafael Nadal defeated Gaël Monfils 6–1, 7–5 to become the event's third Spanish winner since David Ferrer won in 2007.

## Seeds

* Rafael Nadal (champion)
* Andy Roddick (quarterfinals)
* Jo-Wilfried Tsonga (first round)
* Jürgen Melzer (second round)
* Gaël Monfils (final)
* Feliciano López (second round)
* Ernests Gulbis (first round)
* Michaël Llodra (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 | Rafael Nadal | 7$^7$ | 4 | 7$^9$ | | | | |
| | Viktor Troicki | 6$^4$ | 6 | 6$^7$ | | | | |
| | Viktor Troicki | 6$^4$ | 6 | 6$^7$ | 1 | Rafael Nadal | 6 | 7 |
| | | | | | 5 | Gaël Monfils | 1 | 5 |
| | Radek Štěpánek | 3 | 3 | | 5 | Gaël Monfils | 1 | 5 |
| 5 | Gaël Monfils | 6 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | R Nadal | 6 | 6 | | | | | | | | | | | | | | | | |
| | S Giraldo | 4 | 4 | | 1 | R Nadal | 6 | 6 | | | | | | | | | | | |
| | F Serra | 4 | 6 | 4 | Q | M Raonic | 4 | 4 | | | | | | | | | | | |
| Q | M Raonic | 6 | 3 | 6 | | | | | | 1 | R Nadal | 6 | 6 | | | | | | |
| | R Gasquet | 6 | 7$^8$ | | | | | | | | D Tursunov | 4 | 1 | | | | | | |
| | T de Bakker | 3 | 6$^6$ | | | R Gasquet | 6$^2$ | 6 | 4 | | | | | | | | | | |
| | D Tursunov | 6 | 6 | | | D Tursunov | 7$^7$ | 1 | 6 | | | | | | | | | | |
| 7 | E Gulbis | 3 | 4 | | | | | | | | | | | | 1 | R Nadal | 7$^7$ | 4 | 7$^9$ |
| 4 | J Melzer | 6 | 4 | 6 | | | | | | | | | | | | V Troicki | 6$^4$ | 6 | 6$^7$ |
| | J Mónaco | 4 | 6 | 1 | 4 | J Melzer | 6$^7$ | 6 | 6$^3$ | | | | | | | | | | |
| WC | K Nishikori | 4 | 2 | | | V Troicki | 7$^9$ | 3 | 7$^7$ | | | | | | | | | | |
| | V Troicki | 6 | 6 | | | | | | | | V Troicki | 6 | 3 | 6 | | | | | |
| | G García-López | 6$^3$ | 6 | 7$^7$ | | | | | | | G García-López | 2 | 6 | 4 | | | | | |
| Q | R Ram | 7$^7$ | 4 | 6$^1$ | | G García-López | 7$^7$ | 6 | | | | | | | | | | | |
| | JM del Potro | 3 | 0 | | 6 | F López | 6$^5$ | 4 | | | | | | | | | | | |
| 6 | F López | 6 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | M Llodra | 3 | 0 | | | | | | | | | | | | | | | |
| | M Chiudinelli | 6 | 6 | | | M Chiudinelli | 7 | 6$^7$ | 1$^r$ | | | | | | | | | |
| | A Falla | 6 | 6$^5$ | 6$^5$ | | R Štěpánek | 5 | 7$^9$ | 4 | | | | | | | | | |
| | R Štěpánek | 2 | 7$^7$ | 7$^7$ | | | | | | | R Štěpánek | w/o | | | | | | |
| | E Schwank | 4 | 4 | | | | | | | | J Nieminen | | | | | | | |
| | D Gimeno-Traver | 6 | 6 | | | D Gimeno-Traver | 3 | 6$^8$ | | | | | | | | | | |
| | J Nieminen | 6 | 5 | 6 | | J Nieminen | 6 | 7$^{10}$ | | | | | | | | | | |
| 3 | J-W Tsonga | 4 | 7 | 1 | | | | | | | | | | | | R Štěpánek | 3 | 3 |
| 5 | G Monfils | 7$^{12}$ | 6 | | | | | | | | | | | | 5 | G Monfils | 6 | 6 |
| WC | G Soeda | 6$^{10}$ | 4 | | 5 | G Monfils | 6 | 6 | | | | | | | | | | |
| Q | I Dodig | 6 | 4 | 2 | | A Seppi | 4 | 4 | | | | | | | | | | |
| | A Seppi | 3 | 6 | 6 | | | | | | 5 | G Monfils | 7$^7$ | 4 | 7$^8$ | | | | |
| Q | É Roger-Vasselin | 3 | 6$^2$ | | | | | | | 2 | A Roddick | 6$^5$ | 6 | 6$^6$ | | | | |
| | J Chardy | 6 | 7$^7$ | | | J Chardy | 4 | 6$^4$ | | | | | | | | | | |
| WC | T Ito | 4 | 3 | | 2 | A Roddick | 6 | 7$^7$ | | | | | | | | | | |
| 2 | A Roddick | 6 | 6 | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Ricardo Mello (first round)
* Marsel İlhan (qualifying competition)
* Édouard Roger-Vasselin (qualified)
* Mischa Zverev (first round)
* Ivan Dodig (qualified)
* Thiago Alves (first round)
* Gilles Müller (first round)
* Rajeev Ram (qualified)

### Qualifiers

* Rajeev Ram
* Milos Raonic
* Édouard Roger-Vasselin
* Ivan Dodig

### Draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Ricardo Mello | 3 | 6 | 6$^6$ | | | | | |
| WC | Hiroki Moriya | 6 | 1 | 7$^8$ | | | | | |
| WC | Hiroki Moriya | 6 | 1 | 7$^8$ | WC | Hiroki Moriya | 6 | 4 | 3 |
| | | | | | 8 | Rajeev Ram | 4 | 6 | 6 |
| | Peter Polansky | 1 | 2$^r$ | | 8 | Rajeev Ram | 4 | 6 | 6 |
| 8 | Rajeev Ram | 6 | 2 | | | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Marsel İlhan | 7$^7$ | 7$^7$ | | | | |
| WC | Hiroki Kondo | 6$^5$ | 6$^5$ | | | | |
| WC | Hiroki Kondo | 6$^5$ | 6$^5$ | 2 | Marsel İlhan | 6$^5$ | 3 |
| | | | | | Milos Raonic | 7$^7$ | 6 |
| | Milos Raonic | 6 | 7$^7$ | | Milos Raonic | 7$^7$ | 6 |
| 6 | Thiago Alves | 3 | 6$^2$ | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Édouard Roger-Vasselin | 6 | 6 | | | | |
| | Yūichi Sugita | 4 | 1 | | | | |
| | Yūichi Sugita | 4 | 1 | 3 | Édouard Roger-Vasselin | 7$^7$ | 6 |
| | | | | | Takao Suzuki | 6$^3$ | 3 |
| | Takao Suzuki | 7$^7$ | 7$^7$ | | Takao Suzuki | 6$^3$ | 3 |
| 7 | Gilles Müller | 6$^5$ | 6$^5$ | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Mischa Zverev | 6$^7$ | 7$^7$ | 6$^4$ | | | | |
| | Iván Navarro | 7$^9$ | 6$^3$ | 7$^7$ | | | | |
| | Iván Navarro | 7$^9$ | 6$^3$ | 7$^7$ | 4 | Iván Navarro | 4 | 2 |
| | | | | | 5 | Ivan Dodig | 6 | 6 |
| WC | Toshihide Matsui | 3 | 6 | 6$^0$ | 5 | Ivan Dodig | 6 | 6 |
| 5 | Ivan Dodig | 6 | 4 | 7$^7$ | | | | |