# 2019 Shanghai Challenger – Singles

Blaž Kavčič was the defending champion but chose not to defend his title.
Yasutaka Uchiyama won the title after defeating Wu Di 6–4, 7–6$^{(7–4)}$ in the final.

## Seeds

All seeds receive a bye into the second round.
* Prajnesh Gunneswaran (semifinals)
* Tatsuma Ito (third round)
* Yūichi Sugita (semifinals)
* Yasutaka Uchiyama (champion)
* Marc Polmans (second round)
* Steven Diez (third round)
* Andrew Harris (quarterfinals, retired)
* Hiroki Moriya (quarterfinals)
* Enrique López Pérez (quarterfinals)
* Max Purcell (third round)
* Roberto Ortega Olmedo (third round)
* Akira Santillan (third round, retired)
* Saketh Myneni (second round)
* Aleksandar Vukic (second round)
* Kaichi Uchida (third round)
* Gonçalo Oliveira (third 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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Prajnesh Gunneswaran | 6 | 6 | | | | | | | | |
| 8 | Hiroki Moriya | 4 | 4 | | | | | | | | |
| 8 | Hiroki Moriya | 4 | 4 | 1 | Prajnesh Gunneswaran | 6$^7$ | 4 | | | | |
| | | | | 4 | Yasutaka Uchiyama | 7$^9$ | 6 | | | | |
| 4 | Yasutaka Uchiyama | 7$^7$ | 2 | 4 | Yasutaka Uchiyama | 7$^9$ | 6 | | | | |
| 7 | Andrew Harris | 6$^1$ | 1$^r$ | | | | | | | | |
| 7 | Andrew Harris | 6$^1$ | 1$^r$ | | | | | 4 | Yasutaka Uchiyama | 6 | 7$^7$ |
| | | | | | | | | WC | Wu Di | 4 | 6$^4$ |
| 9 | Enrique López Pérez | 4 | 6$^3$ | | | | | | | | | WC | Wu Di | 4 | 6$^4$ |
| 3 | Yūichi Sugita | 6 | 7$^7$ | | | | | | | | |
| 3 | Yūichi Sugita | 6 | 7$^7$ | 3 | Yūichi Sugita | 4 | 6$^2$ | | | | |
| | | | | WC | Wu Di | 6 | 7$^7$ | | | | |
| WC | Wu Di | 6 | 6 | WC | Wu Di | 6 | 7$^7$ | | | | |
| | Collin Altamirano | 4 | 0 | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | P Gunneswaran | 6 | 7$^7$ | | | | | | | | | | |
| | J Ward | 6 | 6 | | | J Ward | 4 | 6$^3$ | | | | | | | | | | |
| | Renta Tokuda | 3 | 4 | | | | | | | 1 | P Gunneswaran | 6 | 6 | | | | | |
| WC | Wang Chukang | 6 | 4 | 2 | | | | | | 16 | G Oliveira | 3 | 4 | | | | | |
| | TK Wang | 4 | 6 | 6 | | TK Wang | 7$^7$ | 3 | 4 | | | | | | | | | |
| | | | | | 16 | G Oliveira | 6$^3$ | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | | 1 | P Gunneswaran | 6 | 6 |
| | | | | | | | | | | | | | | | 8 | H Moriya | 4 | 4 |
| | | | | | 10 | M Purcell | 4 | 7 | 6 | | | | | | | | | |
| | L Castelnuovo | 5 | 7$^7$ | 5 | | L Saville | 6 | 5 | 3 | | | | | | | | | |
| | L Saville | 7 | 6$^3$ | 7 | | | | | | 10 | M Purcell | 6 | 6$^2$ | 1 | | | | |
| | E King | 2 | 6$^5$ | | | | | | | 8 | H Moriya | 4 | 7$^7$ | 6 | | | | |
| | F Sun | 6 | 7$^7$ | | | F Sun | 2 | 7 | 2 | | | | | | | | | |
| | | | | | 8 | H Moriya | 6 | 5 | 6 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | Y Uchiyama | 7$^7$ | 6 | | | | | | | | | |
| | A Kadhe | 7$^7$ | 6 | | | A Kadhe | 6$^4$ | 3 | | | | | | | | | |
| | Shintaro Imai | 6$^2$ | 3 | | | | | | | 4 | Y Uchiyama | 6 | 6 | | | | |
| | Jacob Grills | 6 | 1 | 1 | | | | | | | S Sekiguchi | 4 | 3 | | | | |
| | Shuichi Sekiguchi | 3 | 6 | 6 | | S Sekiguchi | 4 | 6 | 7$^7$ | | | | | | | | |
| | | | | | 13 | S Myneni | 6 | 3 | 6$^4$ | | | | | | | | |
| | | | | | | | | | | | | | | 4 | Y Uchiyama | 7$^7$ | 2 |
| | | | | | | | | | | | | | | 7 | A Harris | 6$^1$ | 1$^r$ |
| | | | | | 12 | A Santillan | 6 | 6 | | | | | | | | | |
| | T Gabashvili | 6 | 7 | | | T Gabashvili | 2 | 1 | | | | | | | | | |
| | V Orlov | 2 | 5 | | | | | | | 12 | A Santillan | 6 | 5$^r$ | | | | |
| PR | Miliaan Niesten | 4 | 2 | | | | | | | 7 | A Harris | 2 | 5 | | | | |
| | Makoto Ochi | 6 | 6 | | | M Ochi | 6 | 2 | 6$^5$ | | | | | | | | |
| | | | | | 7 | A Harris | 4 | 6 | 7$^7$ | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 6 | S Diez | 7 | 6 | | | | | | | | | |
| | Sidharth Rawat | 4 | 4 | | WC | R Hua | 5 | 3 | | | | | | | | | |
| WC | R Hua | 6 | 6 | | | | | | | 6 | S Diez | 4 | 5 | | | | |
| Q | Kazuki Nishiwaki | 3 | 2 | | | | | | | 9 | E López Pérez | 6 | 7 | | | | |
| | Jumpei Yamasaki | 6 | 6 | | | J Yamasaki | 4 | 6 | 2 | | | | | | | | |
| | | | | | 9 | E López Pérez | 6 | 3 | 6 | | | | | | | | |
| | | | | | | | | | | | | | | 9 | E López Pérez | 4 | 6$^3$ |
| | | | | | | | | | | | | | | 3 | Y Sugita | 6 | 7$^7$ |
| | | | | | 15 | K Uchida | 4 | 7$^{10}$ | 6 | | | | | | | | |
| Q | Chuh Wang | 4 | 4 | | | Y Takahashi | 6 | 6$^8$ | 0 | | | | | | | | |
| | Y Takahashi | 6 | 6 | | | | | | | 15 | K Uchida | 6$^2$ | 3 | | | | |
| | T Fancutt | 6 | 6$^4$ | 6$^8$ | | | | | | 3 | Y Sugita | 7$^7$ | 6 | | | | |
| | H Bourchier | 3 | 7$^7$ | 7$^{10}$ | | H Bourchier | 3 | 3 | | | | | | | | | |
| | | | | | 3 | Y Sugita | 6 | 6 | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 5 | M Polmans | 3 | 3 | | | | | | | | | |
| WC | D Wu | 6 | 0 | WC | D Wu | 6 | 6 | | | | | | | | | |
| | I Sijsling | 3 | 0$^r$ | | | | | WC | D Wu | 6 | 5 | 7$^7$ | | | | |
| WC | Y He | 6 | 6 | | | | | 11 | R Ortega Olmedo | 1 | 7 | 6$^4$ | | | | |
| | A Velotti | 3 | 2 | WC | Y He | 2 | 3 | | | | | | | | | |
| | | | | 11 | R Ortega Olmedo | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | WC | D Wu | 6 | 6 |
| | | | | | | | | | | | | | | C Altamirano | 4 | 0 |
| | | | | 14 | A Vukic | 4 | 6$^4$ | | | | | | | | | |
| | C Altamirano | 6 | 6 | | C Altamirano | 6 | 7$^7$ | | | | | | | | | |
| WC | X Gao | 1 | 1 | | | | | | C Altamirano | 6 | 7$^7$ | | | | | |
| | S Mukund | 6 | 6 | | | | | 2 | T Ito | 3 | 6$^4$ | | | | | |
| | Alafia Ayeni | 4 | 1 | | S Mukund | 4 | 4 | | | | | | | | | |
| | | | | 2 | T Ito | 6 | 6 | | | | | | | | | |