# 2015 Gimcheon Open ATP Challenger – Singles

Gilles Müller was the defending champion, but he did not participate. Alexander Sarkissian won the title over Connor Smith.

## Seeds

* Go Soeda (second round)
* Chen Ti (first round)
* Daniel Nguyen (first round)
* Ramkumar Ramanathan (second round)
* Connor Smith (final)
* Takuto Niki (second round)
* David Pérez Sanz (first round)
* Alexander Sarkissian (champion)

## 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 |
| | Kim Cheong-eui | 1 | 7 | 4 | | | | |
| 8 | Alexander Sarkissian | 6 | 5 | 6 | | | | |
| 8 | Alexander Sarkissian | 6 | 5 | 6 | 8 | Alexander Sarkissian | 7$^7$ | 6 |
| | | | | | 5 | Connor Smith | 6$^5$ | 4 |
| | Hiroyasu Ehara | 3 | 4 | | 5 | Connor Smith | 6$^5$ | 4 |
| 5 | Connor Smith | 6 | 6 | | | | | |

### Top half

| 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 |
| 1 | G Soeda | 6 | 6 | | | | | | | | | | | | | | |
| | J Nedunchezhiyan | 4 | 2 | 1 | G Soeda | 7$^7$ | 5 | 2 | | | | | | | | | |
| | Kim Cheong-eui | 6 | 1 | | C-e Kim | 6$^4$ | 7 | 6 | | | | | | | | | |
| | T Matsui | 2 | 0$^r$ | | | | | | | C-e Kim | 7 | 6 | | | | | |
| Q | C O'Connell | 7$^7$ | 6 | | | | | | Q | C O'Connell | 5 | 4 | | | | | |
| Q | Jang Woo-hyeok | 6$^5$ | 3 | Q | C O'Connell | 2 | 6 | 6 | | | | | | | | | |
| WC | D-h Lee | 2 | 3 | 6 | T Niki | 6 | 3 | 1 | | | | | | | | | |
| 6 | T Niki | 6 | 6 | | | | | | | | | | | C-e Kim | 1 | 7 | 4 |
| 3 | D Nguyen | 6$^3$ | 1 | | | | | | | | | | 8 | A Sarkissian | 6 | 5 | 6 |
| | F Wolmarans | 7$^7$ | 6 | | F Wolmarans | 3 | 7$^7$ | 3 | | | | | | | | | |
| | O Jasika | 3 | 4 | WC | Y-s Kim | 6 | 6$^5$ | 6 | | | | | | | | | |
| WC | Kim Young-seok | 6 | 6 | | | | | | WC | Y-s Kim | 4 | 4 | | | | | |
| WC | J-m Lee | 3 | 2 | | | | | | 8 | A Sarkissian | 6 | 6 | | | | | |
| | Z Li | 6 | 6 | | Z Li | 4 | 2 | | | | | | | | | | |
| Q | B Mott | 6$^1$ | 3 | 8 | A Sarkissian | 6 | 6 | | | | | | | | | | |
| 8 | A Sarkissian | 7$^7$ | 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 |
| 7 | D Pérez Sanz | 6 | 2 | 2 | | | | | | | | | | | | | |
| | Hiroyasu Ehara | 0 | 6 | 6 | | H Ehara | 6 | 6 | | | | | | | | | |
| | M Tepavac | 1 | 3 | | | S Sekiguchi | 4 | 1 | | | | | | | | | |
| | Shuichi Sekiguchi | 6 | 6 | | | | | | | | H Ehara | 7 | 6 | | | | |
| | R Roelofse | 2 | 4 | | | | | | | | J-s Nam | 5 | 3 | | | | |
| | J-s Nam | 6 | 6 | | | J-s Nam | 3 | 6 | 6 | | | | | | | | |
| | K Takeuchi | 2 | 2 | | 4 | R Ramanathan | 6 | 2 | 3 | | | | | | | | |
| 4 | R Ramanathan | 6 | 6 | | | | | | | | | | | | H Ehara | 3 | 4 |
| 5 | Connor Smith | 6 | 6 | | | | | | | | | | | 5 | Connor Smith | 6 | 6 |
| | Yuuya Kibi | 1 | 1 | | 5 | Connor Smith | 6 | 4 | 6 | | | | | | | | |
| WC | S-w Kwon | 4 | 6 | 4 | PR | K Singh | 3 | 6 | 4 | | | | | | | | |
| PR | Karunuday Singh | 6 | 4 | 6 | | | | | | 5 | Connor Smith | 6 | 6 | | | | |
| Q | J-w Na | 4 | 4 | | | | | | | | J Statham | 4 | 2 | | | | |
| | J Statham | 6 | 6 | | | J Statham | 6 | 2 | | | | | | | | | |
| | P Bester | 6 | 6 | | | P Bester | 2 | 0$^r$ | | | | | | | | | |
| 2 | T Chen | 4 | 2 | | | | | | | | | | | | | | |