# 2013 Keio Challenger – Singles

Matteo Viola was the defending champion but chose not to compete. Matthew Ebden won his third Challenger of the year over Japan's Go Soeda.

## Seeds

* Matthew Ebden (champion)
* Blaž Kavčič (second round, withdrew)
* Go Soeda (final)
* Bradley Klahn (semifinals)
* James Duckworth (first round)
* Pierre-Hugues Herbert (semifinals)
* Yūichi Sugita (first round, retired)
* Tatsuma Ito (quarterfinals)

## 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 | Final |
| 1 | Matthew Ebden | 6 | 6 | | | | | |
| 4 | Bradley Klahn | 3 | 1 | | | | | |
| 4 | Bradley Klahn | 3 | 1 | 1 | Matthew Ebden | 2 | 7$^7$ | 6 |
| | | | | 3 | Go Soeda | 6 | 6$^3$ | 3 |
| 3 | Go Soeda | 6 | 6 | 3 | Go Soeda | 6 | 6$^3$ | 3 |
| 6 | Pierre-Hugues Herbert | 4 | 4 | | | | | |

### 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 | M Ebden | 6 | 3 | 6 | | | | | | | | | | | | | |
| | M Bašić | 0 | 6 | 2 | 1 | M Ebden | 6 | 6 | | | | | | | | | |
| | H Moriya | 6 | 6 | | | H Moriya | 1 | 3 | | | | | | | | | |
| | M Reid | 3 | 2 | | | | | | 1 | M Ebden | 6 | 6 | | | | | |
| | B Rola | 6$^4$ | 4 | | | | | | | J Wang | 4 | 4 | | | | | |
| | B Mitchell | 7$^7$ | 6 | | | B Mitchell | 6$^2$ | 0 | | | | | | | | | |
| | J Wang | 6 | 3 | | | J Wang | 7$^7$ | 6 | | | | | | | | | |
| 7 | Y Sugita | 4 | 1$^r$ | | | | | | | | | | | 1 | M Ebden | 6 | 6 |
| 4 | B Klahn | 6 | 6 | | | | | | | | | | | 4 | B Klahn | 3 | 1 |
| | L-C Huang | 1 | 3 | | 4 | B Klahn | 6 | 7 | | | | | | | | | |
| | D Wu | 6 | 5 | 6 | | D Wu | 1 | 5 | | | | | | | | | |
| | J McGee | 3 | 7 | 2 | | | | | 4 | B Klahn | 4 | 6 | 6 | | | | |
| PR | D Kosakowski | 2 | 1 | | | | | | 8 | T Ito | 6 | 3 | 4 | | | | |
| Q | H Chung | 6 | 6 | | Q | H Chung | 2 | 3 | | | | | | | | | |
| | T Daniel | 5 | 3 | | 8 | T Ito | 6 | 6 | | | | | | | | | |
| 8 | T Ito | 7 | 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 |
| 5 | J Duckworth | 3 | 5 | | | | | | | | | | | | | | | |
| | K Coppejans | 6 | 7 | | | K Coppejans | 6 | 1 | 2 | | | | | | | | | |
| | M Chiudinelli | 6 | 7 | | | M Chiudinelli | 4 | 6 | 6 | | | | | | | | | |
| Q | Y Uchiyama | 4 | 5 | | | | | | | | M Chiudinelli | 4 | 4 | | | | | |
| WC | Masato Shiga | 6 | 4 | 2 | | | | | | 3 | G Soeda | 6 | 6 | | | | | |
| Q | C Buchanan | 3 | 6 | 6 | Q | C Buchanan | 1 | 1 | | | | | | | | | | |
| WC | K Uchida | 2 | 4 | | 3 | G Soeda | 6 | 6 | | | | | | | | | | |
| 3 | G Soeda | 6 | 6 | | | | | | | | | | | | 3 | G Soeda | 6 | 6 |
| 6 | P-H Herbert | 6 | 6 | | | | | | | | | | | | 6 | P-H Herbert | 4 | 4 |
| WC | Y Nishioka | 3 | 2 | | 6 | P-H Herbert | 7$^7$ | 6 | | | | | | | | | | |
| | E López-Pérez | 4 | 6 | 6 | | E López-Pérez | 6$^5$ | 4 | | | | | | | | | | |
| Q | Shuichi Sekiguchi | 6 | 4 | 2 | | | | | | 6 | P-H Herbert | 2 | 6 | 7$^9$ | | | | |
| | G Gigounon | 2 | 2 | | | | | | | WC | B Ćorić | 6 | 3 | 6$^7$ | | | | |
| WC | B Ćorić | 6 | 6 | | WC | B Ćorić | w/o | | | | | | | | | | | |
| | J Ward | 4 | 1 | | 2 | B Kavčič | | | | | | | | | | | | |
| 2 | B Kavčič | 6 | 6 | | | | | | | | | | | | | | | |