# 2015 Dunlop World Challenge – Men's singles

Yoshihito Nishioka won the title, defeating Alexander Kudryavtsev in the final 6–3, 6–4.

## Seeds

* Matthew Ebden (first round, retired)
* Tatsuma Ito (quarterfinals)
* James Duckworth (second round)
* Go Soeda (second round, retired)
* Yūichi Sugita (semifinals)
* Konstantin Kravchuk (semifinals)
* Yoshihito Nishioka (champion)
* Jordan Thompson (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 | Semifinals | Final | Final | Final | Final |
| 6 | Konstantin Kravchuk | 2 | 5 | | | | | |
| 7 | Yoshihito Nishioka | 6 | 7 | | | | | |
| 7 | Yoshihito Nishioka | 6 | 7 | | 7 | Yoshihito Nishioka | 6 | 6 |
| | | | | | | Alexander Kudryavtsev | 3 | 4 |
| | Alexander Kudryavtsev | 7$^7$ | 6$^5$ | 6 | | Alexander Kudryavtsev | 3 | 4 |
| 5 | Yūichi Sugita | 6$^4$ | 7$^7$ | 3 | | | | |

### Top half

| 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$^4$ | 3$^r$ | | | | | | | | | | | | | |
| PR | G Jones | 7$^7$ | 2 | PR | G Jones | 5 | 6$^5$ | | | | | | | | | |
| | Gavin van Peperzeel | 4 | 2 | WC | S Katayama | 7 | 7$^7$ | | | | | | | | | |
| WC | Sho Katayama | 6 | 6 | | | | | WC | S Katayama | 2 | 6$^4$ | | | | | |
| | A Kapaś | 3 | 6$^4$ | | | | | 6 | K Kravchuk | 6 | 7$^7$ | | | | | |
| Q | Itsuki Imina | 6 | 7$^7$ | Q | I Imina | 2 | 4 | | | | | | | | | |
| WC | Makoto Ochi | 3 | 1 | 6 | K Kravchuk | 6 | 6 | | | | | | | | | |
| 6 | K Kravchuk | 6 | 6 | | | | | | | | | | 6 | K Kravchuk | 2 | 5 |
| 4 | G Soeda | 6 | 6 | | | | | | | | | | 7 | Y Nishioka | 6 | 7 |
| | Y Uchiyama | 4 | 3 | 4 | G Soeda | 3 | r | | | | | | | | | |
| WC | Yu Watanuki | 6$^5$ | 6$^4$ | | T Vorster | 6 | | | | | | | | | | |
| | T Vorster | 7$^7$ | 7$^7$ | | | | | | T Vorster | 6 | 5 | 5 | | | | |
| Q | Keisuke Watanuki | 4 | 3 | | | | | 7 | Y Nishioka | 3 | 7 | 7 | | | | |
| | Shuichi Sekiguchi | 6 | 6 | | S Sekiguchi | 4 | 3 | | | | | | | | | |
| | H Moriya | 3 | 3 | 7 | Y Nishioka | 6 | 6 | | | | | | | | | |
| 7 | Y Nishioka | 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 | Semifinals |
| 8 | J Thompson | 2 | 4 | | | | | | | | | | | | | | | |
| | J Jung | 6 | 6 | | | J Jung | 4 | 6 | 7$^7$ | | | | | | | | | |
| | R Ghedin | 3 | 2 | | | T Chen | 6 | 4 | 6$^4$ | | | | | | | | | |
| | T Chen | 6 | 6 | | | | | | | | J Jung | 3 | 3 | | | | | |
| | A Kudryavtsev | 6 | 6 | | | | | | | | A Kudryavtsev | 6 | 6 | | | | | |
| | C Rungkat | 1 | 0 | | | A Kudryavtsev | 7$^7$ | 6 | | | | | | | | | | |
| WC | Sora Fukuda | 3 | 4 | | 3 | J Duckworth | 6$^1$ | 3 | | | | | | | | | | |
| 3 | J Duckworth | 6 | 6 | | | | | | | | | | | | A Kudryavtsev | 7$^7$ | 6$^5$ | 6 |
| 5 | Y Sugita | 6$^2$ | 7$^7$ | 6 | | | | | | | | | | 5 | Y Sugita | 6$^4$ | 7$^7$ | 3 |
| | B Klein | 7$^7$ | 6$^3$ | 2 | 5 | Y Sugita | 3 | 6 | 3 | | | | | | | | | |
| Q | B Mitchell | 6 | 3 | 6 | Q | B Mitchell | 6 | 1 | 1$^r$ | | | | | | | | | |
| | M Reid | 3 | 6 | 1 | | | | | | 5 | Y Sugita | 6 | 6 | | | | | |
| | K Takeuchi | 6 | 3 | 0 | | | | | | 2 | T Ito | 3 | 4 | | | | | |
| Q | Yuya Kibi | 4 | 6 | 6 | Q | Y Kibi | 6$^5$ | 3 | | | | | | | | | | |
| | O Jasika | 6$^1$ | 3 | | 2 | T Ito | 7$^7$ | 6 | | | | | | | | | | |
| 2 | T Ito | 7 | 6 | | | | | | | | | | | | | | | |