# 2011 Dunlop World Challenge – Men's singles

Tatsuma Ito was the defending champion, and successfully defended his title, defeating Sebastian Rieschick in the final 6–4, 6–2.

## Seeds

* Go Soeda (quarterfinals)
* Tatsuma Ito (champion)
* Yūichi Sugita (semifinals)
* Danai Udomchoke (first round)
* Andre Begemann (second round)
* Roman Borvanov (first round)
* Sebastian Rieschick (final)
* Jummy Wang (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 | Semifinals | Final | Final | Final | Final |
| 7 | Sebastian Rieschick | 6 | 1 | 6 | | | | |
| 3 | Yūichi Sugita | 4 | 6 | 3 | | | | |
| 3 | Yūichi Sugita | 4 | 6 | 3 | 7 | Sebastian Rieschick | 4 | 2 |
| | | | | | 2 | Tatsuma Ito | 6 | 6 |
| | Takao Suzuki | 3 | 3 | | 2 | Tatsuma Ito | 6 | 6 |
| 2 | Tatsuma Ito | 6 | 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 | Semifinals |
| 1 | G Soeda | 7$^7$ | 7$^7$ | | | | | | | | | | | | | | | | |
| Q | Wang Chieh-fu | 6$^4$ | 6$^5$ | | 1 | G Soeda | 7$^7$ | 4 | 6 | | | | | | | | | | |
| | T Chen | 6$^4$ | 6 | 6 | | T Chen | 6$^5$ | 6 | 3 | | | | | | | | | | |
| | D Yoo | 7$^7$ | 2 | 4 | | | | | | 1 | G Soeda | 6 | 6$^9$ | 4 | | | | | |
| WC | Shota Tagawa | 6 | 6 | | | | | | | 7 | S Rieschick | 3 | 7$^{11}$ | 6 | | | | | |
| | Kento Takeuchi | 3 | 2 | | WC | Shota Tagawa | 3 | 2 | | | | | | | | | | | |
| | A Sadecky | 4 | 2 | | 7 | S Rieschick | 6 | 6 | | | | | | | | | | | |
| 7 | S Rieschick | 6 | 6 | | | | | | | | | | | | 7 | S Rieschick | 6 | 1 | 6 |
| 3 | Y Sugita | 5 | 6 | 6 | | | | | | | | | | | 3 | Y Sugita | 4 | 6 | 3 |
| | JP Fruttero | 7 | 4 | 4 | 3 | Y Sugita | 7$^7$ | 6 | | | | | | | | | | | |
| WC | Arata Onozawa | 6 | 7$^{12}$ | | WC | Arata Onozawa | 6$^4$ | 1 | | | | | | | | | | | |
| Q | W Gao | 3 | 6$^{10}$ | | | | | | | 3 | Y Sugita | 6 | 6 | | | | | | |
| | Y Bhambri | 7 | 7$^7$ | | | | | | | | Y Bhambri | 2 | 1 | | | | | | |
| | C Gârd | 5 | 6$^1$ | | | Y Bhambri | 5 | 6 | 6 | | | | | | | | | | |
| WC | Takeshi Endo | 3 | 6 | 2 | 8 | J Wang | 7 | 4 | 2 | | | | | | | | | | |
| 8 | J Wang | 6 | 3 | 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 |
| 6 | R Borvanov | 3 | 1 | | | | | | | | | | | | | | | |
| | T Matsui | 6 | 6 | | | T Matsui | 6 | 6 | | | | | | | | | | |
| | Hiroyasu Ehara | 3 | 2 | | | H Kondo | 3 | 4 | | | | | | | | | | |
| | H Kondo | 6 | 6 | | | | | | | | T Matsui | 3 | 6 | 6$^3$ | | | | |
| | S-J Cho | 3 | 4 | | | | | | | | T Suzuki | 6 | 3 | 7$^7$ | | | | |
| | W-s Jun | 6 | 6 | | | W-s Jun | 6$^3$ | 4 | | | | | | | | | | |
| | T Suzuki | 7$^8$ | 7$^{12}$ | | | T Suzuki | 7$^7$ | 6 | | | | | | | | | | |
| 4 | D Udomchoke | 6$^6$ | 6$^{10}$ | | | | | | | | | | | | | T Suzuki | 3 | 3 |
| 5 | A Begemann | 6 | 6 | | | | | | | | | | | | 2 | T Ito | 6 | 6 |
| Q | Masatoshi Miyazaki | 4 | 4 | | 5 | A Begemann | 4 | 7 | 4 | | | | | | | | | |
| | Y Uchiyama | 6 | 6 | | | Y Uchiyama | 6 | 5 | 6 | | | | | | | | | |
| Q | J-m Lee | 4 | 2 | | | | | | | | Y Uchiyama | 3 | 4 | | | | | |
| | Hiroki Moriya | 6 | 6 | | | | | | | 2 | T Ito | 6 | 6 | | | | | |
| WC | Takuto Niki | 3 | 3 | | | Hiroki Moriya | 3 | 4 | | | | | | | | | | |
| | B Sato | 7 | 6$^5$ | 1 | 2 | T Ito | 6 | 6 | | | | | | | | | | |
| 2 | T Ito | 5 | 7$^7$ | 6 | | | | | | | | | | | | | | |