# 2018 Shanghai Challenger – Singles

Wu Yibing was the defending champion but lost in the second round to Li Zhe.
Blaž Kavčič won the title after defeating Hiroki Moriya 6–1, 7–6$^{(7–1)}$ in the final.

## Seeds

* Jason Jung (second round)
* Enrique López Pérez (withdrew)
* Tatsuma Ito (first round, retired)
* Zhang Ze (first round)
* Go Soeda (first round)
* Filip Peliwo (first round)
* Miomir Kecmanović (semifinals, retired)
* Hiroki Moriya (final)

## 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 |
| 7 | Miomir Kecmanović | 6 | 6$^4$ | 0$^r$ | | | | |
| | Blaž Kavčič | 4 | 7$^7$ | 1 | | | | |
| | Blaž Kavčič | 4 | 7$^7$ | 1 | | Blaž Kavčič | 6 | 7$^7$ |
| | | | | | 8 | Hiroki Moriya | 1 | 6$^1$ |
| 8 | Hiroki Moriya | 6$^3$ | 7$^7$ | 7$^7$ | 8 | Hiroki Moriya | 1 | 6$^1$ |
| | Li Zhe | 7$^7$ | 6$^5$ | 6$^4$ | | | | |

### 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 | J Jung | 4 | 7 | 6 | | | | | | | | | | | | | | | |
| WC | R Hua | 6 | 5 | 3 | 1 | J Jung | 3 | 0 | | | | | | | | | | | |
| Q | Y Bai | 6 | 2 | 3 | | D Wu | 6 | 6 | | | | | | | | | | | |
| | D Wu | 2 | 6 | 6 | | | | | | | D Wu | 6 | 3 | 1 | | | | | |
| | R Safiullin | 7$^7$ | 6$^4$ | 3 | | | | | | 7 | M Kecmanović | 3 | 6 | 6 | | | | | |
| Q | T Lamasine | 6$^3$ | 7$^7$ | 6 | Q | T Lamasine | 4 | 3 | | | | | | | | | | | |
| Q | D Kelly | 6 | 6$^8$ | 2 | 7 | M Kecmanović | 6 | 6 | | | | | | | | | | | |
| 7 | M Kecmanović | 4 | 7$^{10}$ | 6 | | | | | | | | | | | 7 | M Kecmanović | 6 | 6$^4$ | 0$^r$ |
| 3 | T Ito | 2 | 0$^r$ | | | | | | | | | | | | | B Kavčič | 4 | 7$^7$ | 1 |
| | S-w Kwon | 6 | 0 | | | S-w Kwon | 5 | 3 | | | | | | | | | | | |
| | A Bega | 4 | 6 | 6 | | A Bega | 7 | 6 | | | | | | | | | | | |
| | F Gaio | 6 | 4 | 3 | | | | | | | A Bega | 1 | 6 | 2 | | | | | |
| | J Rodionov | 6 | 5 | 7 | | | | | | | B Kavčič | 6 | 4 | 6 | | | | | |
| | B Schnur | 4 | 7 | 5 | | J Rodionov | 7$^7$ | 3 | 4 | | | | | | | | | | |
| | B Kavčič | 6 | 5 | 6 | | B Kavčič | 6$^4$ | 6 | 6 | | | | | | | | | | |
| 6 | F Peliwo | 1 | 7 | 0 | | | | | | | | | | | | | | | |

### 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 | H Moriya | 4 | 6 | 6 | | | | | | | | | | | | | | |
| | T-h Yang | 6 | 3 | 2 | 8 | H Moriya | 4 | 6 | 6 | | | | | | | | | |
| | A Santillan | 6$^6$ | 3 | | | U Ignatik | 6 | 3 | 1 | | | | | | | | | |
| | U Ignatik | 7$^8$ | 6 | | | | | | | 8 | H Moriya | 6 | 6 | | | | | |
| | M Purcell | 6 | 6 | | | | | | | | A Bublik | 4 | 4 | | | | | |
| | M Neuchrist | 4 | 4 | | | M Purcell | 6$^5$ | 3 | | | | | | | | | | |
| | A Bublik | 6 | 5 | 6 | | A Bublik | 7$^7$ | 6 | | | | | | | | | | |
| 4 | Ze Zhang | 3 | 7 | 4 | | | | | | | | | | 8 | H Moriya | 6$^3$ | 7$^7$ | 7$^7$ |
| 5 | G Soeda | 4 | 2 | | | | | | | | | | | | Z Li | 7$^7$ | 6$^5$ | 6$^4$ |
| WC | Y Wu | 6 | 6 | | WC | Y Wu | 6 | 0 | 3 | | | | | | | | | |
| | Z Li | 6 | 3 | 7 | | Z Li | 3 | 6 | 6 | | | | | | | | | |
| WC | Zh Zhang | 3 | 6 | 5 | | | | | | | Z Li | 6 | 6 | | | | | |
| Q | A Šetkić | 6 | 6 | | | | | | | Q | A Šetkić | 4 | 0 | | | | | |
| | Y-s Chung | 3 | 4 | | Q | A Šetkić | 6 | 7$^7$ | | | | | | | | | | |
| WC | R Te | 6 | 6 | | WC | R Te | 3 | 6$^5$ | | | | | | | | | | |
| LL | V Durasovic | 3 | 3 | | | | | | | | | | | | | | | |