# 2019 Liuzhou Open – Men's singles

Radu Albot was the defending champion but chose not to defend his title.
Alejandro Davidovich Fokina won the title after defeating Denis Istomin 6–3, 5–7, 7–6$^{(7–5)}$ in the final.

## Seeds

All seeds receive a bye into the second round.
* Prajnesh Gunneswaran (third round, withdrew)
* Alejandro Davidovich Fokina (champion)
* Jason Jung (quarterfinals)
* Malek Jaziri (third round)
* Steven Diez (third round)
* Enrique López Pérez (second round)
* Danilo Petrović (semifinals, retired)
* Christopher Eubanks (third round)
* Denis Istomin (final)
* Mohamed Safwat (second round)
* Bai Yan (second round)
* Frederico Ferreira Silva (third round)
* Roman Safiullin (third round)
* Li Zhe (quarterfinals)
* Wu Tung-lin (quarterfinals)
* Lee Duck-hee (second 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 | Final | Final | Final | Final | Final |
| 15 | Wu Tung-lin | 2 | 3 | | | | | | | | | | |
| 9 | Denis Istomin | 6 | 6 | | | | | | | | | | |
| 9 | Denis Istomin | 6 | 6 | | 9 | Denis Istomin | 4 | | | | | | |
| | | | | | 7 | Danilo Petrović | 3$^r$ | | | | | | |
| 14 | Li Zhe | 4 | 4 | | 7 | Danilo Petrović | 3$^r$ | | | | | | |
| 7 | Danilo Petrović | 6 | 6 | | | | | | | | | | |
| 7 | Danilo Petrović | 6 | 6 | | | | | | 9 | Denis Istomin | 3 | 7 | 6$^5$ |
| | | | | | | | | | 2 | Alejandro Davidovich Fokina | 6 | 5 | 7$^7$ |
| | Borna Gojo | 7$^7$ | 6 | | | | | | | | | | | 2 | Alejandro Davidovich Fokina | 6 | 5 | 7$^7$ |
| 3 | Jason Jung | 6$^4$ | 1 | | | | | | | | | | |
| 3 | Jason Jung | 6$^4$ | 1 | | | Borna Gojo | 2 | 2 | | | | | |
| | | | | | 2 | Alejandro Davidovich Fokina | 6 | 6 | | | | | |
| | Yuta Shimizu | 7 | 3 | 1 | 2 | Alejandro Davidovich Fokina | 6 | 6 | | | | | |
| 2 | Alejandro Davidovich Fokina | 5 | 6 | 6 | | | | | | | | | |

### 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 | 6 | | | | | | | | | | |
| PR | N Barrientos | 6 | 3 | 7$^8$ | PR | N Barrientos | 2 | 1 | | | | | | | | | | |
| | F Sun | 4 | 6 | 6$^6$ | | | | | | 1 | P Gunneswaran | | | | | | | |
| | K Sultanov | 6 | 6 | | | | | | | 15 | T-l Wu | w/o | | | | | | |
| WC | A Wang | 2 | 0 | | | K Sultanov | 1 | 3 | | | | | | | | | | |
| | | | | | 15 | T-l Wu | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 15 | T-l Wu | 2 | 3 |
| | | | | | | | | | | | | | | | 9 | D Istomin | 6 | 6 |
| | | | | | 9 | D Istomin | 7$^7$ | 6 | | | | | | | | | | |
| | Makoto Ochi | 6 | 6 | | | M Ochi | 6$^3$ | 3 | | | | | | | | | | |
| LL | I Sabanov | 2 | 2 | | | | | | | 9 | D Istomin | 4 | 7$^7$ | 6 | | | | |
| | D Yevseyev | 6 | 6 | | | | | | | 5 | S Diez | 6 | 6$^4$ | 0 | | | | |
| WC | Y Mo | 3 | 0 | | | D Yevseyev | 6 | 3 | 2 | | | | | | | | | |
| | | | | | 5 | S Diez | 3 | 6 | 6 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 4 | M Jaziri | 6 | 6 | | | | | | | | |
| | F Reboul | 3 | 4 | | Y He | 1 | 0 | | | | | | | | |
| | Y He | 6 | 6 | | | | | 4 | M Jaziri | 4 | 2 | | | | |
| | X Gao | 4 | 4 | | | | | 14 | Z Li | 6 | 6 | | | | |
| | Sidharth Rawat | 6 | 6 | | S Rawat | 2 | 3 | | | | | | | | |
| | | | | 14 | Z Li | 6 | 6 | | | | | | | | |
| | | | | | | | | | | | | 14 | Z Li | 4 | 4 |
| | | | | | | | | | | | | 7 | D Petrović | 6 | 6 |
| | | | | 12 | F Ferreira Silva | 7 | 6 | | | | | | | | |
| WC | Xia Zihao | 2 | 0 | | R Noguchi | 5 | 4 | | | | | | | | |
| | R Noguchi | 6 | 6 | | | | | 12 | F Ferreira Silva | 6$^8$ | 6$^6$ | | | | |
| | J-s Nam | 6 | 7$^7$ | | | | | 7 | D Petrović | 7$^{10}$ | 7$^8$ | | | | |
| | K Uchida | 3 | 6$^4$ | | J-s Nam | 3 | 4 | | | | | | | | |
| | | | | 7 | D Petrović | 6 | 6 | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | C Eubanks | 6 | 6 | | | | | | | | |
| Q | M Sabanov | 6 | 6 | | Q | M Sabanov | 4 | 2 | | | | | | | | |
| WC | Li Yuanfeng | 3 | 2 | | | | | | 8 | C Eubanks | 6$^4$ | 5 | | | | |
| | B Gojo | 6 | 6 | | | | | | | B Gojo | 7$^7$ | 7 | | | | |
| | T van Rijthoven | 1 | 3 | | | B Gojo | 7$^7$ | 6 | | | | | | | | |
| | | | | | 11 | Y Bai | 6$^5$ | 0 | | | | | | | | |
| | | | | | | | | | | | | | | B Gojo | 7$^7$ | 6 |
| | | | | | | | | | | | | | 3 | J Jung | 6$^4$ | 1 |
| | | | | | 16 | D-h Lee | 2 | 4 | | | | | | | | |
| | Renta Tokuda | 7 | 4 | 3 | | J Cui | 6 | 6 | | | | | | | | |
| | J Cui | 5 | 6 | 6 | | | | | | J Cui | 5 | 4 | | | | |
| Q | T Matsui | 4 | 6 | 6 | | | | | 3 | J Jung | 7 | 6 | | | | |
| WC | Wu Hao | 6 | 1 | 4 | Q | T Matsui | 2 | 2 | | | | | | | | |
| | | | | | 3 | J Jung | 6 | 6 | | | | | | | | |

#### Section 4

| 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 | Quarterfinals |
| | | | 6 | E López Pérez | 3 | 3 | | | | | | | | | | |
| G Oliveira | 2 | 2 | | K Kravchuk | 6 | 6 | | | | | | | | | | |
| K Kravchuk | 6 | 6 | | | | | | K Kravchuk | 7 | 4 | 0$^r$ | | | | | |
| Y Shimizu | 6 | 1 | | | | | | Y Shimizu | 5 | 6 | 2 | | | | | |
| I Nedelko | 0 | 1$^r$ | | Y Shimizu | 6 | 6 | | | | | | | | | | |
| | | | 10 | M Safwat | 1 | 2 | | | | | | | | | | |
| | | | | | | | | | | | | | Y Shimizu | 7 | 3 | 1 |
| | | | | | | | | | | | | 2 | A Davidovich Fokina | 5 | 6 | 6 |
| | | | 13 | R Safiullin | 7 | 6 | | | | | | | | | | |
| D Kalenichenko | 6 | 6 | | D Kalenichenko | 5 | 4 | | | | | | | | | | |
| Y Takahashi | 2 | 2 | | | | | 13 | R Safiullin | 3 | 3 | | | | | | |
| Y-s Chung | 6 | 7$^7$ | | | | | 2 | A Davidovich Fokina | 6 | 6 | | | | | | |
| T Niki | 2 | 6$^2$ | | Y-s Chung | 5 | 5 | | | | | | | | | | |
| | | | 2 | A Davidovich Fokina | 7 | 7 | | | | | | | | | | |