# 2019 Ningbo Challenger – Singles

Thomas Fabbiano was the defending champion but chose not to defend his title.
Yasutaka Uchiyama won the title after defeating Steven Diez 6–1, 6–3 in the final.

## Seeds

All seeds receive a bye into the second round.
* Prajnesh Gunneswaran (quarterfinals)
* Bradley Klahn (semifinals)
* Alejandro Davidovich Fokina (semifinals)
* Yasutaka Uchiyama (champion)
* Go Soeda (second round)
* Jason Jung (second round)
* Tatsuma Ito (third round)
* Alex Bolt (second round)
* Malek Jaziri (second round)
* Marc Polmans (second round)
* Steven Diez (final)
* Zhang Zhizhen (second round)
* Andrew Harris (second round)
* Enrique López Pérez (third round)
* Denis Istomin (second round)
* Danilo Petrović (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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Prajnesh Gunneswaran | 3 | 4 | | | | | | | | | | |
| 11 | Steven Diez | 6 | 6 | | | | | | | | | | |
| 11 | Steven Diez | 6 | 6 | | 11 | Steven Diez | 6 | 6 | | | | | |
| | | | | | 3 | Alejandro Davidovich Fokina | 1 | 3 | | | | | |
| 3 | Alejandro Davidovich Fokina | 6$^3$ | 6 | 6 | 3 | Alejandro Davidovich Fokina | 1 | 3 | | | | | |
| | Borna Gojo | 7$^7$ | 2 | 4 | | | | | | | | | |
| | Borna Gojo | 7$^7$ | 2 | 4 | | | | | | 11 | Steven Diez | 1 | 3 |
| | | | | | | | | | | 4 | Yasutaka Uchiyama | 6 | 6 |
| | Frederico Ferreira Silva | 5 | 2 | | | | | | | | | | | 4 | Yasutaka Uchiyama | 6 | 6 |
| 4 | Yasutaka Uchiyama | 7 | 6 | | | | | | | | | | |
| 4 | Yasutaka Uchiyama | 7 | 6 | | 4 | Yasutaka Uchiyama | 4 | 6 | 6 | | | | |
| | | | | | 2 | Bradley Klahn | 6 | 4 | 3 | | | | |
| | Hiroki Moriya | 6 | 0 | 5 | 2 | Bradley Klahn | 6 | 4 | 3 | | | | |
| 2 | Bradley Klahn | 4 | 6 | 7 | | | | | | | | | |

### Top half
#### Section 1

| 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 |
| | | | | 1 | P Gunneswaran | 6 | 6 | | | | | | | | | |
| | I Nedelko | 3 | 2 | | M Purcell | 3 | 4 | | | | | | | | | |
| | M Purcell | 6 | 6 | | | | | | 1 | P Gunneswaran | 7$^7$ | 6 | | | | |
| | T-h Yang | 6 | 7$^7$ | | | | | | | T-h Yang | 6$^1$ | 3 | | | | |
| WC | X Gao | 2 | 6$^4$ | | T-h Yang | 3 | 6 | 6 | | | | | | | | |
| | | | | 15 | D Istomin | 6 | 3 | 2 | | | | | | | | |
| | | | | | | | | | | | | | 1 | P Gunneswaran | 3 | 4 |
| | | | | | | | | | | | | | 11 | S Diez | 6 | 6 |
| | | | | 11 | S Diez | 6 | 7 | | | | | | | | | |
| | M Safwat | 0 | 5 | | D Yevseyev | 2 | 5 | | | | | | | | | |
| | D Yevseyev | 6 | 7 | | | | | | 11 | S Diez | 7$^7$ | 7 | | | | |
| | A Vukic | 5 | 3 | | | | | | | C Eubanks | 6$^1$ | 5 | | | | |
| | C Eubanks | 7 | 6 | | C Eubanks | 7 | 7$^7$ | | | | | | | | | |
| | | | | 5 | G Soeda | 5 | 6$^1$ | | | | | | | | | |

#### 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 3 | A Davidovich Fokina | 6$^6$ | 6 | 6 | | | | | | | | | | |
| | Shintaro Imai | 4 | 4 | | WC | F Sun | 7$^8$ | 2 | 4 | | | | | | | | | | |
| WC | F Sun | 6 | 6 | | | | | | | 3 | A Davidovich Fokina | 6 | 6 | | | | | | |
| | Y-s Chung | 1 | 6 | 6 | | | | | | 16 | D Petrović | 4 | 3 | | | | | | |
| LL | A Wang | 6 | 2 | 1 | | Y-s Chung | 3 | 3 | | | | | | | | | | | |
| | | | | | 16 | D Petrović | 6 | 6 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 3 | A Davidovich Fokina | 6$^3$ | 6 | 6 |
| | | | | | | | | | | | | | | | | B Gojo | 7$^7$ | 2 | 4 |
| | | | | | 10 | M Polmans | 6$^6$ | 4 | | | | | | | | | | | |
| WC | Li Yuanfeng | 3 | 7$^9$ | 1 | | B Gojo | 7$^8$ | 6 | | | | | | | | | | | |
| | B Gojo | 6 | 6$^7$ | 6 | | | | | | | B Gojo | 6 | 6$^4$ | 6 | | | | | |
| | C-h Tseng | 4 | 6 | 4 | | | | | | | Ze Zhang | 3 | 7$^7$ | 2 | | | | | |
| | Ze Zhang | 6 | 4 | 6 | | Ze Zhang | 6 | 6 | | | | | | | | | | | |
| | | | | | 8 | A Bolt | 4 | 4 | | | | | | | | | | | |

### 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 |
| | | | | | 7 | T Ito | 3 | 6 | 6 | | | | | | | | |
| | K Uchida | 2 | 7 | 6 | | K Uchida | 6 | 3 | 4 | | | | | | | | |
| Q | F Reboul | 6 | 5 | 3 | | | | | | 7 | T Ito | 4 | 6$^5$ | | | | |
| WC | J Cui | 2 | 1 | | | | | | | | F Ferreira Silva | 6 | 7$^7$ | | | | |
| | F Ferreira Silva | 6 | 6 | | | F Ferreira Silva | 7$^{10}$ | 6 | | | | | | | | | |
| | | | | | 9 | M Jaziri | 6$^8$ | 4 | | | | | | | | | |
| | | | | | | | | | | | | | | | F Ferreira Silva | 5 | 2 |
| | | | | | | | | | | | | | | 4 | Y Uchiyama | 7 | 6 |
| | | | | | 14 | E López Pérez | 6 | 6 | | | | | | | | | |
| | G Oliveira | 5 | 0 | | Alt | N Barrientos | 4 | 3 | | | | | | | | | |
| Alt | N Barrientos | 7 | 6 | | | | | | | 14 | E López Pérez | 6$^5$ | 3 | | | | |
| | D Wu | 7$^7$ | 6 | | | | | | | 4 | Y Uchiyama | 7$^7$ | 6 | | | | |
| WC | Y He | 6$^2$ | 3 | | | D Wu | 2 | 1 | | | | | | | | | |
| | | | | | 4 | Y Uchiyama | 6 | 6 | | | | | | | | | |

#### Section 4

| 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 | Quarterfinals |
| | | | | | 6 | J Jung | 7$^7$ | 6$^5$ | 5 | | | | | | | | | | |
| | A Santillan | 6 | 6 | | | A Santillan | 6$^5$ | 7$^7$ | 7 | | | | | | | | | | |
| | Z Li | 2 | 4 | | | | | | | | A Santillan | 7$^7$ | 3 | 4 | | | | | |
| | H Moriya | 1 | 6 | 6 | | | | | | | H Moriya | 6$^5$ | 6 | 6 | | | | | |
| | T-l Wu | 6 | 3 | 4 | | H Moriya | 5 | 6 | 6 | | | | | | | | | | |
| | | | | | 12 | Zh Zhang | 7 | 2 | 1 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | H Moriya | 6 | 0 | 5 |
| | | | | | | | | | | | | | | | 2 | B Klahn | 4 | 6 | 7 |
| | | | | | 13 | A Harris | 3 | 5 | | | | | | | | | | | |
| | J-s Nam | 6 | 6 | | | J-s Nam | 6 | 7 | | | | | | | | | | | |
| | Shuichi Sekiguchi | 1 | 1 | | | | | | | | J-s Nam | 6$^5$ | 6$^3$ | | | | | | |
| | Yo Watanuki | 6 | 4 | 6 | | | | | | 2 | B Klahn | 7$^7$ | 7$^7$ | | | | | | |
| Q | Sidharth Rawat | 4 | 6 | 3 | | Yo Watanuki | 7$^7$ | 2 | 3 | | | | | | | | | | |
| | | | | | 2 | B Klahn | 6$^5$ | 6 | 6 | | | | | | | | | | |