# 2012 Dunlop World Challenge – Men's singles

Tatsuma Ito was the defending champion but decided not to participate. Michał Przysiężny defeated Hiroki Moriya 6–2, 6–3 in the final to win the title.

## Seeds

* Yūichi Sugita (semifinals)
* Rajeev Ram (first round)
* Matteo Viola (quarterfinals)
* Jimmy Wang (quarterfinals)
* Hiroki Moriya (final)
* Chen Ti (second round)
* John Millman (semifinals)
* Brydan Klein (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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Yūichi Sugita | 6$^5$ | 2 | | | | |
| 5 | Hiroki Moriya | 7$^7$ | 6 | | | | |
| 5 | Hiroki Moriya | 7$^7$ | 6 | 5 | Hiroki Moriya | 2 | 3 |
| | | | | | Michał Przysiężny | 6 | 6 |
| | Michał Przysiężny | 7$^7$ | 6 | | Michał Przysiężny | 6 | 6 |
| 7 | John Millman | 6$^3$ | 2 | | | | |

### Top 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 |
| 1 | Y Sugita | 3 | 7$^7$ | 6 | | | | | | | | | | | | |
| | J Baker | 6 | 6$^2$ | 3 | 1 | Y Sugita | 6 | 6 | | | | | | | | |
| | Y Uchiyama | 7 | 3 | 6 | | Y Uchiyama | 4 | 4 | | | | | | | | |
| | C Rungkat | 5 | 6 | 3 | | | | | 1 | Y Sugita | 6 | 6 | | | | |
| WC | H Kondo | 6 | 6 | | | | | | WC | H Kondo | 2 | 3 | | | | |
| | S-Y Jeong | 4 | 4 | | WC | H Kondo | 6 | 6 | | | | | | | | |
| | P Oswald | 6$^3$ | 6 | 5 | 6 | T Chen | 4 | 4 | | | | | | | | |
| 6 | T Chen | 7$^7$ | 4 | 7 | | | | | | | | | 1 | Y Sugita | 6$^5$ | 2 |
| 4 | J Wang | 6$^1$ | 6 | 7 | | | | | | | | | 5 | H Moriya | 7$^7$ | 6 |
| | H Laaksonen | 7$^7$ | 2 | 5 | 4 | J Wang | 6 | 6 | | | | | | | | |
| Q | J McGee | 7$^7$ | 7$^7$ | | Q | J McGee | 3 | 1 | | | | | | | | |
| | L-c Huang | 6$^5$ | 6$^4$ | | | | | | 4 | J Wang | 6$^4$ | 2 | | | | |
| | D Zivkovic | 1 | 2 | | | | | | 5 | H Moriya | 7$^7$ | 6 | | | | |
| | B Mitchell | 6 | 6 | | | B Mitchell | 4 | 2 | | | | | | | | |
| WC | Sho Katayama | 3 | 4 | | 5 | H Moriya | 6 | 6 | | | | | | | | |
| 5 | H Moriya | 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 |
| 8 | B Klein | 5 | 7$^7$ | 3 | | | | | | | | | | | | | |
| | T-h Yang | 7 | 6$^2$ | 6 | | T-h Yang | 1 | 3 | | | | | | | | | |
| | M Przysiężny | 5 | | | | M Przysiężny | 6 | 6 | | | | | | | | | |
| | A Kudryavtsev | 2$^r$ | | | | | | | | | M Przysiężny | 6 | 6 | | | | |
| Q | Takuto Niki | 7 | 3 | 6$^5$ | | | | | | 3 | M Viola | 4 | 4 | | | | |
| | M Reid | 5 | 6 | 7$^7$ | | M Reid | 3 | 5 | | | | | | | | | |
| WC | Hiroyasu Ehara | 2 | 1 | | 3 | M Viola | 6 | 7 | | | | | | | | | |
| 3 | M Viola | 6 | 6 | | | | | | | | | | | | M Przysiężny | 7$^7$ | 6 |
| 7 | J Millman | 6 | 7 | | | | | | | | | | | 7 | J Millman | 6$^3$ | 2 |
| | Andrea Arnaboldi | 4 | 5 | | 7 | J Millman | 6 | 3 | 6 | | | | | | | | |
| Q | Julien Obry | 2 | 6 | 7 | Q | Julien Obry | 1 | 6 | 1 | | | | | | | | |
| | P Amritraj | 6 | 3 | 5 | | | | | | 7 | J Millman | 6 | 6 | | | | |
| WC | T Suzuki | 7 | 3 | 6$^8$ | | | | | | | M Bašić | 3 | 3 | | | | |
| | M Bašić | 5 | 6 | 7$^{10}$ | | M Bašić | 6$^6$ | 6 | 7 | | | | | | | | |
| Q | T Matsui | 6 | 6 | | Q | T Matsui | 7$^8$ | 3 | 5 | | | | | | | | |
| 2 | R Ram | 4 | 3 | | | | | | | | | | | | | | |