# 2017 Santaizi ATP Challenger – Singles

Dan Evans was the defending champion but chose not to defend his title.
Lu Yen-hsun won the title after defeating Tatsuma Ito 6–1, 7–6$^{(7–4)}$ in the final.

## Seeds

* Marcos Baghdatis (first round)
* Lu Yen-hsun (champion)
* Konstantin Kravchuk (quarterfinals)
* Dudi Sela (second round)
* Lukáš Lacko (second round)
* Vasek Pospisil (semifinals)
* Lee Duck-hee (first round)
* Go Soeda (quarterfinals)

## 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 |
| | Akira Santillan | 4 | 6 | 5 | | | | |
| | Tatsuma Ito | 6 | 2 | 7 | | | | |
| | Tatsuma Ito | 6 | 2 | 7 | | Tatsuma Ito | 1 | 6$^4$ |
| | | | | | 2 | Lu Yen-hsun | 6 | 7$^7$ |
| 6 | Vasek Pospisil | 4 | 4 | | 2 | Lu Yen-hsun | 6 | 7$^7$ |
| 2 | Lu Yen-hsun | 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 |
| 1/WC | M Baghdatis | 3 | 5 | | | | | | | | | | | | | | | |
| | S-w Kwon | 6 | 7 | | | S-w Kwon | 7$^7$ | 5 | 2 | | | | | | | | | |
| Q | M Ebden | 6 | 7 | | Q | M Ebden | 6$^3$ | 7 | 6 | | | | | | | | | |
| | T Chen | 2 | 5 | | | | | | | Q | M Ebden | 4 | 6 | 0 | | | | |
| | A Santillan | 6 | 3 | 7$^7$ | | | | | | | A Santillan | 6 | 1 | 6 | | | | |
| | M Matosevic | 1 | 6 | 6$^5$ | | A Santillan | 6 | 3 | 7$^7$ | | | | | | | | | |
| | R Ramanathan | 2 | 6 | 6 | | R Ramanathan | 4 | 6 | 6$^4$ | | | | | | | | | |
| 7 | D-h Lee | 6 | 2 | 4 | | | | | | | | | | | A Santillan | 4 | 6 | 5 |
| 3 | K Kravchuk | 6 | 6 | | | | | | | | | | | | T Ito | 6 | 2 | 7 |
| | Marek Jaloviec | 3 | 3 | | 3 | K Kravchuk | 7$^7$ | 7 | | | | | | | | | | |
| | Shuichi Sekiguchi | 1 | 4 | | | F Škugor | 6$^5$ | 5 | | | | | | | | | | |
| | F Škugor | 6 | 6 | | | | | | | 3 | K Kravchuk | 4 | 6$^5$ | | | | | |
| | Y Uchiyama | 4 | 0$^r$ | | | | | | | | T Ito | 6 | 7$^7$ | | | | | |
| | T Ito | 6 | 3 | | | T Ito | 6 | 6 | | | | | | | | | | |
| | J Jung | 1 | 4 | | 5 | L Lacko | 4 | 4 | | | | | | | | | | |
| 5 | L Lacko | 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 |
| 6 | V Pospisil | 7 | 6 | | | | | | | | | | | | | | |
| Q | S Mukund | 5 | 2 | | 6 | V Pospisil | 7$^7$ | 6 | | | | | | | | | |
| | P Gunneswaran | 7$^7$ | 6 | | | P Gunneswaran | 6$^4$ | 2 | | | | | | | | | |
| Q | R Roelofse | 6$^4$ | 4 | | | | | | | 6 | V Pospisil | 6 | 6 | | | | |
| | M Chiudinelli | 6 | 6 | | | | | | | | M Chiudinelli | 3 | 4 | | | | |
| | L Saville | 4 | 4 | | | M Chiudinelli | 6 | 6 | | | | | | | | | |
| WC | T-h Yang | 4 | 2 | | 4 | D Sela | 4 | 3 | | | | | | | | | |
| 4 | D Sela | 6 | 6 | | | | | | | | | | | 6 | V Pospisil | 4 | 4 |
| 8 | G Soeda | 7$^7$ | 7$^7$ | | | | | | | | | | | 2 | Y-h Lu | 6 | 6 |
| | H Moriya | 6$^2$ | 6$^5$ | | 8 | G Soeda | 4 | 6 | 6 | | | | | | | | |
| Q | M Bachinger | 6 | 6 | | Q | M Bachinger | 6 | 4 | 1 | | | | | | | | |
| | B Klein | 4 | 2 | | | | | | | 8 | G Soeda | 1 | 3 | | | | |
| WC | J Wang | 4 | 6 | 0 | | | | | | 2 | Y-h Lu | 6 | 6 | | | | |
| | A Kudryavtsev | 6 | 4 | 0$^r$ | WC | J Wang | 5 | 1 | | | | | | | | | |
| WC | K-y Lee | 2 | 1 | | 2 | Y-h Lu | 7 | 6 | | | | | | | | | |
| 2 | Y-h Lu | 6 | 6 | | | | | | | | | | | | | | |