# 2009 Keio Challenger – Singles

Lee Hyung-taik was the defending champion, but he retired from playing tournaments before this event. Takao Suzuki won in the final 6–4, 7–6(5), against Martin Fischer.

## Seeds

* Go Soeda (semifinals)
* Im Kyu-tae (quarterfinals)
* Dieter Kindlmann (quarterfinals)
* Tatsuma Ito (second round)
* Philipp Oswald (semifinals)
* Pavol Červenák (first round)
* Nick Lindahl (second round)
* Martin Fischer (final)

## 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 | Go Soeda | 3 | 4 | | | | |
| 8 | Martin Fischer | 6 | 6 | | | | |
| 8 | Martin Fischer | 6 | 6 | 8 | Martin Fischer | 4 | 6$^5$ |
| | | | | | Takao Suzuki | 6 | 7 |
| 5 | Philipp Oswald | 5 | 1 | | Takao Suzuki | 6 | 7 |
| | Takao Suzuki | 7 | 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 |
| 1 | G Soeda | 7 | 6 | | | | | | | | | | | | | | | |
| | A Kedryuk | 6$^3$ | 2 | | 1 | G Soeda | 6 | 6 | | | | | | | | | | |
| WC | J Mitsuhashi | 7 | 4 | 6 | WC | J Mitsuhashi | 2 | 1 | | | | | | | | | | |
| Q | C-h Yi | 5 | 6 | 2 | | | | | | 1 | G Soeda | 6 | 6 | | | | | |
| | J Huta Galung | 3 | 4 | | | | | | | | T-h Yang | 4 | 2 | | | | | |
| | T-h Yang | 6 | 6 | | | T-h Yang | 6 | 6 | | | | | | | | | | |
| | J Statham | 4 | 7 | 7 | | J Statham | 3 | 3 | | | | | | | | | | |
| 6 | P Červenák | 6 | 6$^4$ | 6$^6$ | | | | | | | | | | | 1 | G Soeda | 3 | 4 |
| 4 | T Ito | 6 | 3 | 6 | | | | | | | | | | | 8 | M Fischer | 6 | 6 |
| | S Stadler | 4 | 6 | 3 | 4 | T Ito | 6 | 4 | 2 | | | | | | | | | |
| WC | K Matsunaga | 3 | 0 | | | V Ignatik | 4 | 6 | 6 | | | | | | | | | |
| | V Ignatik | 6 | 6 | | | | | | | | V Ignatik | 6 | 3 | 3 | | | | |
| Q | Y Ito | 6 | 3 | 6 | | | | | | 8 | M Fischer | 4 | 6 | 6 | | | | |
| | G Jones | 4 | 6 | 3 | Q | Y Ito | 6 | 2 | 0 | | | | | | | | | |
| Q | T Chen | 0 | 0 | | 8 | M Fischer | 4 | 6 | 6 | | | | | | | | | |
| 8 | M Fischer | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | P Oswald | 6 | | | | | | | | | | | | | | |
| Q | A Kudryavtsev | 3 | r | | 5 | P Oswald | 6 | 6 | | | | | | | | |
| | G Tošić | 3 | 0 | | | H Moriya | 3 | 4 | | | | | | | | |
| | H Moriya | 6 | 6 | | | | | | 5 | P Oswald | 6 | 6 | | | | |
| | A Juška | 1 | 2 | | | | | | 3 | D Kindlmann | 4 | 4 | | | | |
| | L Sorensen | 6 | 6 | | | L Sorensen | 1 | r | | | | | | | | |
| WC | T Matsui | 3 | 4 | | 3 | D Kindlmann | 4 | | | | | | | | | |
| 3 | D Kindlmann | 6 | 6 | | | | | | | | | | 5 | P Oswald | 5 | 1 |
| 7 | N Lindahl | 6 | 7 | | | | | | | | | | | T Suzuki | 7 | 6 |
| | S Kadir | 2 | 5 | | 7 | N Lindahl | 4 | 4 | | | | | | | | |
| | A Sadecky | 2 | 4 | | | T Suzuki | 6 | 6 | | | | | | | | |
| | T Suzuki | 6 | 6 | | | | | | | T Suzuki | 6 | 6 | | | | |
| WC | S Aida | 2 | 2 | | | | | | 2 | K-t Im | 3 | 1 | | | | |
| | Y Sugita | 6 | 6 | | | Y Sugita | 4 | 0 | | | | | | | | |
| | N Mektić | 6 | 2 | 6$^7$ | 2 | K-t Im | 6 | 6 | | | | | | | | |
| 2 | K-t Im | 3 | 6 | 7 | | | | | | | | | | | | |