# 2013 Rakuten Japan Open Tennis Championships – Singles

Kei Nishikori was the defending champion, but lost in the quarter-finals to Nicolás Almagro. First-seeded Juan Martín del Potro won the title, defeating Milos Raonic in the final, 7–6$^{(7–5)}$, 7–5.

## Seeds

* Juan Martín del Potro (champion)
* Jo-Wilfried Tsonga (second round)
* Milos Raonic (final)
* Kei Nishikori (quarterfinals)
* Gilles Simon (withdrew)
* Nicolás Almagro (semifinals)
* Kevin Anderson (first round)
* Janko Tipsarević (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 | Final | Final | Final | Final |
| 1/WC | Juan Martín del Potro | 7$^9$ | 7$^7$ | | | | |
| 6 | Nicolás Almagro | 6$^7$ | 6$^1$ | | | | |
| 6 | Nicolás Almagro | 6$^7$ | 6$^1$ | 1/WC | Juan Martín del Potro | 7$^7$ | 7 |
| | | | | 3 | Milos Raonic | 6$^5$ | 5 |
| 3 | Milos Raonic | 7$^7$ | 6 | 3 | Milos Raonic | 6$^5$ | 5 |
| | Ivan Dodig | 6$^4$ | 1 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1/WC | JM del Potro | 4 | 6 | 6 | | | | | | | | | | | | | |
| | M Baghdatis | 6 | 4 | 3 | 1/WC | JM del Potro | 6 | 6 | | | | | | | | | |
| | C Berlocq | 7$^7$ | 6 | | | C Berlocq | 2 | 2 | | | | | | | | | |
| PR | P Cuevas | 6$^4$ | 2 | | | | | | 1/WC | JM del Potro | 4 | 6 | 6 | | | | |
| | A Dolgopolov | 6 | 6 | | | | | | | A Dolgopolov | 6 | 4 | 2 | | | | |
| | D Brands | 3 | 1 | | | A Dolgopolov | 6 | 7$^7$ | | | | | | | | | |
| | V Hănescu | 7$^8$ | 1 | 4 | 8 | J Tipsarević | 3 | 6$^2$ | | | | | | | | | |
| 8 | J Tipsarević | 6$^6$ | 6 | 6 | | | | | | | | | | 1/WC | JM del Potro | 7$^9$ | 7$^7$ |
| 4 | K Nishikori | 6$^4$ | 7 | 6 | | | | | | | | | | 6 | N Almagro | 6$^7$ | 6$^1$ |
| | J Melzer | 7$^7$ | 5 | 2 | 4 | K Nishikori | 7$^7$ | 6 | | | | | | | | | |
| | F López | 4 | 7 | 6 | | F López | 6$^4$ | 0 | | | | | | | | | |
| WC | T Ito | 6 | 5 | 3 | | | | | 4 | K Nishikori | 6$^2$ | 7 | 3 | | | | |
| Q | R Harrison | 1 | 6 | 4 | | | | | 6 | N Almagro | 7$^7$ | 5 | 6 | | | | |
| | H Zeballos | 6 | 4 | 6 | | H Zeballos | 4 | 2 | | | | | | | | | |
| Q | B Becker | 6$^4$ | 6$^3$ | | 6 | N Almagro | 6 | 6 | | | | | | | | | |
| 6 | N Almagro | 7$^7$ | 7$^7$ | | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | K Anderson | 4 | 6$^2$ | | | | | | | | | | | | | | |
| LL | L Lacko | 6 | 7$^7$ | | LL | L Lacko | 7 | 6 | | | | | | | | | |
| Q | É Roger-Vasselin | 6 | 3 | 6 | Q | É Roger-Vasselin | 5 | 4 | | | | | | | | | |
| | D Tursunov | 4 | 6 | 3 | | | | | | LL | L Lacko | 3 | 3 | | | | |
| Q | M Chiudinelli | 6$^2$ | 6 | 6$^6$ | | | | | | 3 | M Raonic | 6 | 6 | | | | |
| | J Chardy | 7$^7$ | 3 | 7$^8$ | | J Chardy | 4 | 3 | | | | | | | | | |
| WC | G Soeda | 4 | 6$^0$ | | 3 | M Raonic | 6 | 6 | | | | | | | | | |
| 3 | M Raonic | 6 | 7$^7$ | | | | | | | | | | | 3 | M Raonic | 7$^7$ | 6 |
| LL | M Przysiężny | 1 | 6 | 6 | | | | | | | | | | | I Dodig | 6$^4$ | 1 |
| | M Granollers | 6 | 3 | 4 | LL | M Przysiężny | 7$^7$ | 4 | 2 | | | | | | | | |
| | J Nieminen | 7$^7$ | 6 | | | J Nieminen | 6$^4$ | 6 | 6 | | | | | | | | |
| | J Mónaco | 6$^4$ | 1 | | | | | | | | J Nieminen | 2 | 6$^3$ | | | | |
| WC | Y Sugita | 3 | 1 | | | | | | | | I Dodig | 6 | 7$^7$ | | | | |
| | I Dodig | 6 | 6 | | | I Dodig | 6 | 7$^7$ | | | | | | | | | |
| | G Monfils | 3 | 6$^8$ | | 2 | J-W Tsonga | 4 | 6$^5$ | | | | | | | | | |
| 2 | J-W Tsonga | 6 | 7$^{10}$ | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Federico Delbonis (first round)
* Édouard Roger-Vasselin (qualified)
* Benjamin Becker (qualified)
* Grega Žemlja (first round, retired)
* Lukáš Lacko (qualifying competition, lucky loser)
* Michał Przysiężny (qualifying competition, lucky loser)
* Alejandro Falla (qualifying competition)
* Michael Russell (qualifying competition)

### Qualifiers

* Marco Chiudinelli
* Édouard Roger-Vasselin
* Benjamin Becker
* Ryan Harrison

### Lucky losers

* Lukáš Lacko
* Michał Przysiężny

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Federico Delbonis | 6$^7$ | 0 | | | | |
| | Marco Chiudinelli | 7$^9$ | 6 | | | | |
| | Marco Chiudinelli | 7$^9$ | 6 | | Marco Chiudinelli | 7 | 6 |
| | | | | 8 | Michael Russell | 5 | 4 |
| | Hiroki Moriya | 3 | 6$^4$ | 8 | Michael Russell | 5 | 4 |
| 8 | Michael Russell | 6 | 7$^7$ | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Édouard Roger-Vasselin | 6 | 7$^7$ | | | | | |
| | Matteo Viola | 2 | 6$^3$ | | | | | |
| | Matteo Viola | 2 | 6$^3$ | 2 | Édouard Roger-Vasselin | 7 | 2 | 6 |
| | | | | 7 | Alejandro Falla | 5 | 6 | 3 |
| WC | Yasutaka Uchiyama | 4 | 6$^6$ | 7 | Alejandro Falla | 5 | 6 | 3 |
| 7 | Alejandro Falla | 6 | 7$^8$ | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Benjamin Becker | 6 | 6 | | | | | |
| | Mischa Zverev | 4 | 2 | | | | | |
| | Mischa Zverev | 4 | 2 | 3 | Benjamin Becker | 2 | 7$^7$ | 7$^8$ |
| | | | | 6 | Michał Przysiężny | 6 | 6$^5$ | 6$^6$ |
| WC | Shuichi Sekiguchi | 3 | 2 | 6 | Michał Przysiężny | 6 | 6$^5$ | 6$^6$ |
| 6 | Michał Przysiężny | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Grega Žemlja | 6 | 6$^6$ | 0$^r$ | | | | | |
| WC | Ryan Harrison | 3 | 7$^8$ | 0 | | | | | |
| WC | Ryan Harrison | 3 | 7$^8$ | 0 | WC | Ryan Harrison | 2 | 6 | 6 |
| | | | | | 5 | Lukáš Lacko | 6 | 4 | 2 |
| | James Duckworth | 6$^5$ | 6 | 4 | 5 | Lukáš Lacko | 6 | 4 | 2 |
| 5 | Lukáš Lacko | 7$^7$ | 4 | 6 | | | | | |