# 2018 Chengdu Challenger – Singles

Lu Yen-hsun was the defending champion but chose not to defend his title.
Zhang Ze won the title after Henri Laaksonen retired at 2–6, 5–2 in the final.

## Seeds

* Henri Laaksonen (final, retired)
* Go Soeda (first round)
* Nikola Milojević (first round)
* Alexander Bublik (second round)
* Tatsuma Ito (quarterfinals, retired)
* Hiroki Moriya (first round)
* Peđa Krstin (second round)
* Yang Tsung-hua (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 |
| 1 | Henri Laaksonen | 2 | 6 | 6 | | | | |
| | James Ward | 6 | 4 | 1 | | | | |
| | James Ward | 6 | 4 | 1 | 1 | Henri Laaksonen | 6 | 2$^r$ |
| | | | | | | Zhang Ze | 2 | 5 |
| | Zhang Ze | 6 | 7$^8$ | | | Zhang Ze | 2 | 5 |
| | Akira Santillan | 4 | 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 | Semifinals |
| 1 | H Laaksonen | 6 | 2 | 7$^7$ | | | | | | | | | | | | | | | |
| WC | R Te | 3 | 6 | 6$^2$ | 1 | H Laaksonen | 6 | 5 | 7$^7$ | | | | | | | | | | |
| | Renta Tokuda | 2 | 2 | | Q | TK Wang | 4 | 7 | 6$^4$ | | | | | | | | | | |
| Q | TK Wang | 6 | 6 | | | | | | | 1 | H Laaksonen | 6$^3$ | 6 | 6 | | | | | |
| | Y Wu | 6 | 6 | | | | | | | | Y Wu | 7$^7$ | 2 | 3 | | | | | |
| WC | X Gao | 0 | 1 | | | Y Wu | 6$^4$ | 6 | 6 | | | | | | | | | | |
| | Z Li | 3 | 4 | | 7 | P Krstin | 7$^7$ | 4 | 4 | | | | | | | | | | |
| 7 | P Krstin | 6 | 6 | | | | | | | | | | | | 1 | H Laaksonen | 2 | 6 | 6 |
| 3 | N Milojević | 4 | 4 | | | | | | | | | | | | | J Ward | 6 | 4 | 1 |
| | D-h Lee | 6 | 6 | | | D-h Lee | 6 | 5 | 3 | | | | | | | | | | |
| | Y Takahashi | 3 | 3 | | | J Ward | 4 | 7 | 6 | | | | | | | | | | |
| | J Ward | 6 | 6 | | | | | | | | J Ward | 6 | 4 | 6 | | | | | |
| | R Safiullin | 6 | 7$^7$ | | | | | | | | R Safiullin | 2 | 6 | 3 | | | | | |
| Q | B Ellis | 3 | 6$^3$ | | | R Safiullin | 4 | 6 | 6 | | | | | | | | | | |
| WC | Zh Zhang | 6 | 6 | | WC | Zh Zhang | 6 | 4 | 1 | | | | | | | | | | |
| 8 | T-h Yang | 4 | 4 | | | | | | | | | | | | | | | | |

### 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 |
| 5 | T Ito | 7$^7$ | 7$^7$ | | | | | | | | | | | | | |
| | D Petrović | 6$^5$ | 6$^3$ | | 5 | T Ito | 6 | 6 | | | | | | | | |
| Alt | A Kadhe | 2 | 4 | | Q | M Niesten | 4 | 1 | | | | | | | | |
| Q | Miliaan Niesten | 6 | 6 | | | | | | | 5 | T Ito | 4 | 0$^r$ | | | |
| | Ze Zhang | 7 | 6 | | | | | | | | Ze Zhang | 6 | 3 | | | |
| | D Wu | 5 | 2 | | | Ze Zhang | 4 | 6 | 6 | | | | | | | |
| Q | Makoto Ochi | 2 | 5 | | 4 | A Bublik | 6 | 4 | 2 | | | | | | | |
| 4 | A Bublik | 6 | 7 | | | | | | | | | | | Ze Zhang | 6 | 7$^8$ |
| 6 | H Moriya | 6 | 6$^5$ | 4 | | | | | | | | | | A Santillan | 4 | 6$^6$ |
| | A Popyrin | 4 | 7$^7$ | 6 | | A Popyrin | 1 | 6$^5$ | | | | | | | | |
| | D Yevseyev | 7 | 6 | | | D Yevseyev | 6 | 7$^7$ | | | | | | | | |
| | M Banes | 5 | 1 | | | | | | | | D Yevseyev | 5 | 2 | | | |
| | A Santillan | 6$^1$ | 7 | 7$^7$ | | | | | | | A Santillan | 7 | 6 | | | |
| | H Heliövaara | 7$^7$ | 5 | 6$^2$ | | A Santillan | 3 | 6 | 7 | | | | | | | |
| WC | Xia Zihao | 7$^7$ | 6 | | WC | Z Xia | 6 | 2 | 5 | | | | | | | |
| 2 | G Soeda | 6$^2$ | 3 | | | | | | | | | | | | | |