# 2019 Kunming Open – Men's singles

Prajnesh Gunneswaran was the defending champion but lost in the final to Jay Clarke.
Clarke won the title after defeating Gunneswaran 6–4, 6–3 in the final.

## Seeds

All seeds receive a bye into the second round.
* Jordan Thompson (third round)
* Prajnesh Gunneswaran (final)
* Kamil Majchrzak (semifinals)
* Jason Jung (third round)
* Ramkumar Ramanathan (quarterfinals)
* Alex Bolt (quarterfinals)
* Dennis Novak (second round)
* Jason Kubler (third round)
* James Duckworth (quarterfinals)
* Nikola Milojević (quarterfinals)
* Enrique López Pérez (third round)
* Aleksandr Nedovyesov (second round)
* Maxime Janvier (third round)
* Jay Clarke (champion)
* Adam Pavlásek (third round)
* Zhang Ze (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 | Semifinals | Final | Final | Final | Final |
| 14 | Jay Clarke | 7 | 3 | 6 | | | | | | | | | |
| 9 | James Duckworth | 5 | 6 | 1 | | | | | | | | | |
| 9 | James Duckworth | 5 | 6 | 1 | 14 | Jay Clarke | 6 | 6 | | | | | |
| | | | | | | Gonçalo Oliveira | 3 | 2 | | | | | |
| | Gonçalo Oliveira | 6$^5$ | 6 | 6 | | Gonçalo Oliveira | 3 | 2 | | | | | |
| 6 | Alex Bolt | 7$^7$ | 4 | 3 | | | | | | | | | |
| 6 | Alex Bolt | 7$^7$ | 4 | 3 | | | | | | 14 | Jay Clarke | 6 | 6 |
| | | | | | | | | | | 2 | Prajnesh Gunneswaran | 4 | 3 |
| 5 | Ramkumar Ramanathan | 1 | 6$^4$ | | | | | | | | | | | 2 | Prajnesh Gunneswaran | 4 | 3 |
| 3 | Kamil Majchrzak | 6 | 7$^7$ | | | | | | | | | | |
| 3 | Kamil Majchrzak | 6 | 7$^7$ | | 3 | Kamil Majchrzak | 6$^5$ | 7$^7$ | 4 | | | | |
| | | | | | 2 | Prajnesh Gunneswaran | 7$^7$ | 6$^3$ | 6 | | | | |
| 10 | Nikola Milojević | 5 | 3 | | 2 | Prajnesh Gunneswaran | 7$^7$ | 6$^3$ | 6 | | | | |
| 2 | Prajnesh Gunneswaran | 7 | 6 | | | | | | | | | | |

### Top half
#### Section 1

| 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | J Thompson | 6 | 6 | | | | | | | | | | |
| | D Wu | 4 | 6 | 2 | | M Purcell | 3 | 4 | | | | | | | | | | |
| | M Purcell | 6 | 4 | 6 | | | | | 1 | J Thompson | 5 | 6 | 2 | | | | | |
| WC | X Gao | 3 | 1 | | | | | | 14 | J Clarke | 7 | 2 | 6 | | | | | |
| | M Viola | 6 | 6 | | | M Viola | 4 | 3 | | | | | | | | | | |
| | | | | | 14 | J Clarke | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | 14 | J Clarke | 7 | 3 | 6 |
| | | | | | | | | | | | | | | 9 | J Duckworth | 5 | 6 | 1 |
| | | | | | 9 | J Duckworth | 6 | 6 | | | | | | | | | | |
| Q | Jacob Grills | 6 | 6 | | Q | J Grills | 3 | 4 | | | | | | | | | | |
| WC | Y He | 1 | 4 | | | | | | 9 | J Duckworth | 7 | 7$^7$ | | | | | | |
| | Makoto Ochi | 6 | 7$^8$ | | | | | | 8 | J Kubler | 5 | 6$^5$ | | | | | | |
| WC | Li Yuanfeng | 2 | 6$^6$ | | | M Ochi | 2 | 1 | | | | | | | | | | |
| | | | | | 8 | J Kubler | 6 | 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 | Quarterfinals |
| | | | | | 4 | J Jung | 6 | 5 | 7 | | | | | | | | | |
| | U Ignatik | 6 | 6 | | | U Ignatik | 3 | 7 | 5 | | | | | | | | | |
| Alt | N Barrientos | 2 | 2 | | | | | | | 4 | J Jung | 3 | 6$^1$ | | | | | |
| | Xia Zihao | 2 | 0 | | | | | | | | G Oliveira | 6 | 7$^7$ | | | | | |
| | G Oliveira | 6 | 6 | | | G Oliveira | 7$^{10}$ | 6 | | | | | | | | | | |
| | | | | | 16 | Ze Zhang | 6$^8$ | 3 | | | | | | | | | | |
| | | | | | | | | | | | | | | | G Oliveira | 6$^5$ | 6 | 6 |
| | | | | | | | | | | | | | | 6 | A Bolt | 7$^7$ | 4 | 3 |
| | | | | | 11 | E López Pérez | 6 | 6 | | | | | | | | | | |
| | L Saville | 3 | 6 | 6 | | L Saville | 3 | 4 | | | | | | | | | | |
| | A Harris | 6 | 4 | 4 | | | | | | 11 | E López Pérez | 3 | 4 | | | | | |
| | T Lamasine | 4 | 7 | 5 | | | | | | 6 | A Bolt | 6 | 6 | | | | | |
| | Y Uchiyama | 6 | 5 | 7 | | Y Uchiyama | 6 | 6$^2$ | 4 | | | | | | | | | |
| | | | | | 6 | A Bolt | 2 | 7$^7$ | 6 | | | | | | | | | |

### 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | R Ramanathan | 6 | 6 | | | | | | | | | | |
| | S Mukund | 1 | 4 | | | Y Bai | 4 | 4 | | | | | | | | | | |
| | Y Bai | 6 | 6 | | | | | | | 5 | R Ramanathan | 6 | 3 | 6 | | | | |
| | A Santillan | 7 | 6$^5$ | 0 | | | | | | | Zh Zhang | 3 | 6 | 3 | | | | |
| | Zh Zhang | 5 | 7$^7$ | 6 | | Zh Zhang | 7$^7$ | 2 | 6 | | | | | | | | | |
| | | | | | 12 | A Nedovyesov | 6$^1$ | 6 | 2 | | | | | | | | | |
| | | | | | | | | | | | | | | | 5 | R Ramanathan | 1 | 6$^4$ |
| | | | | | | | | | | | | | | | 3 | K Majchrzak | 6 | 7$^7$ |
| | | | | | 13 | M Janvier | 6$^5$ | 7 | 7$^7$ | | | | | | | | | |
| | K Uchida | 7$^7$ | 3 | 1 | | T-h Yang | 7$^7$ | 5 | 6$^2$ | | | | | | | | | |
| | T-h Yang | 6$^3$ | 6 | 6 | | | | | | 13 | M Janvier | 3 | 4 | | | | | |
| | M Banes | 4 | 6 | 7$^7$ | | | | | | 3 | K Majchrzak | 6 | 6 | | | | | |
| Q | B Patael | 6 | 3 | 6$^5$ | | M Banes | 4 | 1 | | | | | | | | | | |
| | | | | | 3 | K Majchrzak | 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 |
| | | | | 7 | D Novak | 1 | 1 | | | | | | | | | |
| | A Martin | 6 | 6 | | A Martin | 6 | 6 | | | | | | | | | |
| WC | F Sun | 3 | 1 | | | | | | A Martin | 1 | 7$^7$ | 1 | | | | |
| | Z Li | 6 | 7$^7$ | | | | | 10 | N Milojević | 6 | 6$^0$ | 6 | | | | |
| | T-l Wu | 2 | 6$^5$ | | Z Li | 4 | 3 | | | | | | | | | |
| | | | | 10 | N Milojević | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | 10 | N Milojević | 5 | 3 |
| | | | | | | | | | | | | | 2 | P Gunneswaran | 7 | 6 |
| | | | | 15 | A Pavlásek | 7$^7$ | 3 | | | | | | | | | |
| | Y-s Chung | 6 | 6 | | Y-s Chung | 6$^2$ | 1$^r$ | | | | | | | | | |
| WC | Liu Hanyi | 1 | 3 | | | | | 15 | A Pavlásek | 5 | 3 | | | | | |
| | S Myneni | 6 | 6 | | | | | 2 | P Gunneswaran | 7 | 6 | | | | | |
| | V Šafránek | 2 | 4 | | S Myneni | 2 | 4 | | | | | | | | | |
| | | | | 2 | P Gunneswaran | 6 | 6 | | | | | | | | | |