# 2017 OEC Kaohsiung – Singles

Chung Hyeon was the defending champion but chose not to defend his title.
Evgeny Donskoy won the title after defeating Marius Copil 7–6$^{(7–0)}$, 7–5 in the final.

## Seeds

* Jordan Thompson (first round)
* Dudi Sela (first round)
* Marius Copil (final)
* Evgeny Donskoy (champion)
* Lukáš Lacko (quarterfinals)
* Mikhail Youzhny (first round)
* Yuki Bhambri (first round)
* Akira Santillan (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 | Final | Final | Final | Final |
| LL | Marinko Matosevic | 2 | 6$^5$ | | | | |
| 3 | Marius Copil | 6 | 7$^7$ | | | | |
| 3 | Marius Copil | 6 | 7$^7$ | 3 | Marius Copil | 6$^0$ | 5 |
| | | | | 4 | Evgeny Donskoy | 7$^7$ | 7 |
| 4 | Evgeny Donskoy | 6 | 6 | 4 | Evgeny Donskoy | 7$^7$ | 7 |
| | Lloyd Harris | 3 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | J Thompson | 6$^3$ | 3 | | | | | | | | | | | | | | |
| Q | A Begemann | 7$^7$ | 6 | | Q | A Begemann | 3 | 6 | 6 | | | | | | | | |
| WC | T-h Yang | 6 | 6 | | WC | T-h Yang | 6 | 1 | 4 | | | | | | | | |
| WC | Y-s Chung | 3 | 2 | | | | | | | Q | A Begemann | 1 | 3 | | | | |
| WC | Y-h Hsu | 1 | 2 | | | | | | | LL | M Matosevic | 6 | 6 | | | | |
| LL | M Matosevic | 6 | 6 | | LL | M Matosevic | 6$^8$ | 7$^7$ | 6 | | | | | | | | |
| | L Saville | 1 | 7$^7$ | 6 | | L Saville | 7$^{10}$ | 6$^2$ | 1 | | | | | | | | |
| 6 | M Youzhny | 6 | 6$^2$ | 1 | | | | | | | | | | LL | M Matosevic | 2 | 6$^5$ |
| 3 | M Copil | 6 | 6 | | | | | | | | | | | 3 | M Copil | 6 | 7$^7$ |
| | S Nagal | 4 | 2 | | 3 | M Copil | 6 | 3 | 6 | | | | | | | | |
| | T Gabashvili | 0 | 6$^5$ | | | M Bachinger | 4 | 6 | 3 | | | | | | | | |
| | M Bachinger | 6 | 7$^7$ | | | | | | | 3 | M Copil | 7$^8$ | 6 | | | | |
| | M Chiudinelli | 0 | 6$^3$ | | | | | | | | L Rosol | 6$^6$ | 4 | | | | |
| | L Rosol | 6 | 7$^7$ | | | L Rosol | 6 | 6$^5$ | 7 | | | | | | | | |
| | Shuichi Sekiguchi | 3 | 4 | | 8 | A Santillan | 4 | 7$^7$ | 5 | | | | | | | | |
| 8 | A Santillan | 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 | L Lacko | 6 | 6 | | | | | | | | | | | | | | |
| | S-w Kwon | 3 | 4 | | 5 | L Lacko | 7 | 6 | | | | | | | | | |
| Q | Kim Cheong-eui | 4 | 4 | | Q | Y Bai | 5 | 2 | | | | | | | | | |
| Q | Y Bai | 6 | 6 | | | | | | | 5 | L Lacko | 2 | 4 | | | | |
| | J Jung | 3 | 6 | 7$^7$ | | | | | | 4 | E Donskoy | 6 | 6 | | | | |
| | D-h Lee | 6 | 2 | 6$^1$ | | J Jung | 1 | 6$^4$ | | | | | | | | | |
| Q | Yuya Kibi | 2 | 4 | | 4 | E Donskoy | 6 | 7$^7$ | | | | | | | | | |
| 4 | E Donskoy | 6 | 6 | | | | | | | | | | | 4 | E Donskoy | 6 | 6 |
| 7 | Y Bhambri | 3 | 3 | | | | | | | | | | | | L Harris | 3 | 3 |
| | J Millman | 6 | 6 | | | J Millman | 6 | 3 | 6 | | | | | | | | |
| | H Moriya | 6 | 6 | | | H Moriya | 1 | 6 | 3 | | | | | | | | |
| | M Polmans | 2 | 4 | | | | | | | | J Millman | 6$^4$ | 3 | | | | |
| WC | T-l Wu | 4 | 6$^4$ | | | | | | | | L Harris | 7$^7$ | 6 | | | | |
| | L Harris | 6 | 7$^7$ | | | L Harris | 6$^3$ | 7$^7$ | 7$^7$ | | | | | | | | |
| | M Purcell | 6 | 0 | 6 | | M Purcell | 7$^7$ | 6$^5$ | 6$^4$ | | | | | | | | |
| 2 | D Sela | 4 | 6 | 3 | | | | | | | | | | | | | |