2013 Keio Challenger – Doubles
# 2013 Keio Challenger – Doubles

Prakash Amritraj and Philipp Oswald were the defending champions but chose not to compete. Bradley Klahn and Michael Venus defeated second seeds Sanchai Ratiwatana and Sonchat Ratiwatana 7–5, 6–1.

## Seeds

* Marin Draganja / Mate Pavić (first round)
* Sanchai Ratiwatana / Sonchat Ratiwatana (final)
* Frank Moser / Matt Reid (first round)
* James Cerretani / Adil Shamasdin (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

### Draw

| First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | M Draganja M Pavić | 3 | $6^{10}$ | | | | | | | | | | | | | |
| Alt | T Matsui D Udomchoke | 6 | $7^{12}$ | Alt | T Matsui D Udomchoke | 6 | 3 | [9] | | | | | | | | |
| | T Chen E López-Pérez | 6 | 7 | | T Chen E López-Pérez | 3 | 6 | [11] | | | | | | | | |
| WC | Koki Takada Takashi Yano | 1 | 5 | | | | | | | T Chen E López-Pérez | 3 | $6^3$ | | | | |
| 3 | F Moser M Reid | 3 | 2 | | | | | | | B Klahn M Venus | 6 | $7^7$ | | | | |
| | C Buchanan B Rola | 6 | 6 | | C Buchanan B Rola | 6 | 4 | [8] | | | | | | | | |
| | B Klein T-h Yang | 3 | 4 | | B Klahn M Venus | 4 | 7 | [10] | | | | | | | | |
| | B Klahn M Venus | 6 | 6 | | | | | | | | | | | B Klahn M Venus | 7 | 6 |
| WC | Yoshifumi Inoue Kweon Dae-yang | 3 | $6^4$ | | | | | | | | | | 2 | Sa Ratiwatana So Ratiwatana | 5 | 1 |
| | H-h Lee H-y Peng | 6 | $7^7$ | | H-h Lee H-y Peng | 4 | 3 | | | | | | | | | |
| | R Gonzales A Sitak | 6 | 6 | | R Gonzales A Sitak | 6 | 6 | | | | | | | | | |
| 4 | J Cerretani A Shamasdin | 0 | 1 | | | | | | | R Gonzales A Sitak | 2 | 2 | | | | |
| WC | T Ito Y Uchiyama | 6 | 6 | | | | | | 2 | Sa Ratiwatana So Ratiwatana | 6 | 6 | | | | |
| | M Bašić G Gigounon | 1 | 1 | WC | T Ito Y Uchiyama | 5 | $6^2$ | | | | | | | | | |
| PR | D Kosakowski J Wang | 2 | $6^5$ | 2 | Sa Ratiwatana So Ratiwatana | 7 | $7^7$ | | | | | | | | | |
| 2 | Sa Ratiwatana So Ratiwatana | 6 | $7^7$ | | | | | | | | | | | | | |
