# 2011 Green World ATP Challenger – Singles

Go Soeda declared as champion after defeating Matthias Bachinger with score 6–4, 7–5 in the final.

## Seeds

* Go Soeda (champion)
* Lukáš Lacko (semifinals)
* Steve Darcis (quarterfinals)
* Alexander Kudryavtsev (first round)
* Matthias Bachinger (final)
* Tatsuma Ito (first round)
* Yūichi Sugita (quarterfinals)
* Uladzimir Ignatik (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 |
| 1 | Go Soeda | 6 | 6 | | | | |
| SE | Cedrik-Marcel Stebe | 3 | 2 | | | | |
| SE | Cedrik-Marcel Stebe | 3 | 2 | 1 | Go Soeda | 6 | 7 |
| | | | | 5 | Matthias Bachinger | 4 | 5 |
| 5 | Matthias Bachinger | 6 | 7 | 5 | Matthias Bachinger | 4 | 5 |
| 2 | Lukáš Lacko | 1 | 6$^3$ | | | | |

### 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 | 6 | 7 | | | | | | | | | | | | | | | |
| Q | J Baker | 3 | 6$^6$ | | 1 | G Soeda | 6 | 6 | | | | | | | | | | |
| | A Veić | 6 | 6 | | | A Veić | 4 | 1 | | | | | | | | | | |
| | T Fabbiano | 3 | 4 | | | | | | | 1 | G Soeda | 6 | 6 | | | | | |
| | K Rastogi | 1 | 2 | | | | | | | Q | C Fleming | 4 | 1 | | | | | |
| PR | A Brugués Davi | 6 | 6 | | PR | A Brugués Davi | 6 | 3 | 4 | | | | | | | | | |
| Q | C Fleming | 6 | 5 | 6 | Q | C Fleming | 4 | 6 | 6 | | | | | | | | | |
| 6 | T Ito | 2 | 7 | 3 | | | | | | | | | | | 1 | G Soeda | 6 | 6 |
| 4 | A Kudryavtsev | 6 | 2 | 5 | | | | | | | | | | | SE | C-M Stebe | 3 | 2 |
| SE | C-M Stebe | 2 | 6 | 7 | SE | C-M Stebe | 7 | 6 | | | | | | | | | | |
| WC | Z Zhang | 5 | 6$^r$ | | | H Heliövaara | 5 | 4 | | | | | | | | | | |
| | H Heliövaara | 7 | 6 | | | | | | | SE | C-M Stebe | 7 | 6$^4$ | 6 | | | | |
| | M Middelkoop | 6 | 6 | | | | | | | 8 | U Ignatik | 6$^3$ | 7 | 3 | | | | |
| | E Kirillov | 4 | 2 | | | M Middelkoop | 4 | 5 | | | | | | | | | | |
| Q | T-h Yang | 4 | 4 | | 8 | U Ignatik | 6 | 7 | | | | | | | | | | |
| 8 | U Ignatik | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | M Bachinger | 6 | 6 | | | | | | | | | | | | | | |
| PR | D Udomchoke | 1 | 3 | | 5 | M Bachinger | w/o | | | | | | | | | | |
| | S Rieschick | 1 | 3 | | | D Goffin | | | | | | | | | | | |
| | D Goffin | 6 | 6 | | | | | | | 5 | M Bachinger | 7 | 6 | | | | |
| | A Peya | 5 | 0$^r$ | | | | | | | 3 | S Darcis | 6$^4$ | 4 | | | | |
| | J Sousa | 7 | 0 | | | J Sousa | 2 | 3 | | | | | | | | | |
| WC | Chang Yu | 5 | 1 | | 3 | S Darcis | 6 | 6 | | | | | | | | | |
| 3 | S Darcis | 7 | 6 | | | | | | | | | | | 5 | M Bachinger | 6 | 7 |
| 7 | Y Sugita | 3 | 7 | 7 | | | | | | | | | | 2 | L Lacko | 1 | 6$^3$ |
| | N Mektić | 6 | 6$^4$ | 6$^7$ | 7 | Y Sugita | 6 | 3 | 6 | | | | | | | | |
| WC | Z Li | 7 | 7 | | WC | Z Li | 4 | 6 | 3 | | | | | | | | |
| Q | W-s Jun | 6$^3$ | 5 | | | | | | | 7 | Y Sugita | 0 | 1$^r$ | | | | |
| | M Gong | 2 | 6 | 4 | | | | | | 2 | L Lacko | 6 | 4 | | | | |
| WC | D Wu | 6 | 3 | 6 | WC | D Wu | 3 | 0 | | | | | | | | | |
| | S Bubka | 3 | 5 | | 2 | L Lacko | 6 | 6 | | | | | | | | | |
| 2 | L Lacko | 6 | 7 | | | | | | | | | | | | | | |