# 2019 Badminton Asia Junior Championships – Boys' singles

The boys' singles tournament of the 2019 Badminton Asia Junior Championships will be held from 24 to 28 July. Lakshya Sen from India clinched this title in the last edition.

## Seeds

Seeds were announced on 2 July.
* Kunlavut Vitidsarn (champion)
* Christian Adinata (second round)
* Syabda Perkasa Belawa (third round)
* Liu Liang (final)
* Li Yunze (semifinals)
* Park Hyeon-seung (quarterfinals)
* Yonathan Ramlie (third round)
* Bobby Setiabudi (third round)

## Draw
### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Kunlavut Vitidsarn | 21 | 21 | | | | | | | | | | |
| | Ko Shing Hei | 13 | 14 | | | | | | | | | | |
| | Ko Shing Hei | 13 | 14 | | 1 | Kunlavut Vitidsarn | 21 | 16 | 21 | | | | |
| | | | | | 5 | Li Yunze | 17 | 21 | 14 | | | | |
| | Ren Chengming | 12 | 21 | 19 | 5 | Li Yunze | 17 | 21 | 14 | | | | |
| 5 | Li Yunze | 21 | 19 | 21 | | | | | | | | | |
| 5 | Li Yunze | 21 | 19 | 21 | | | | | | 1 | Kunlavut Vitidsarn | 21 | 21 |
| | | | | | | | | | | 4 | Liu Liang | 14 | 13 |
| | Chiang Chien-wei | 14 | 19 | | | | | | | | | | | 4 | Liu Liang | 14 | 13 |
| 4 | Liu Liang | 21 | 21 | | | | | | | | | | |
| 4 | Liu Liang | 21 | 21 | | 4 | Liu Liang | 21 | 21 | | | | | |
| | | | | | | Su Li-yang | 9 | 17 | | | | | |
| 6 | Park Hyeon-seung | 14 | 21 | 14 | | Su Li-yang | 9 | 17 | | | | | |
| | Su Li-yang | 21 | 14 | 21 | | | | | | | | | |

### 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 | K Vitidsarn | 18 | 21 | 21 | | | | | | | | |
| M Luwang | 21 | 17 | 23 | | M Luwang | 21 | 15 | 8 | | | | | | | | |
| Park S-y | 18 | 21 | 21 | | | | | | 1 | K Vitidsarn | 21 | 21 | | | | |
| Nguyễn T T | 22 | 21 | | | | | | | | Yu S-p | 19 | 14 | | | | |
| M Lim Y Z | 20 | 12 | | | Nguyễn T T | 17 | 10 | | | | | | | | | |
| M Hanif | 8 | 7 | | | Yu S-p | 21 | 21 | | | | | | | | | |
| Yu S-p | 21 | 21 | | | | | | | | | | | 1 | K Vitidsarn | 21 | 21 |
| | | | | | | | | | | | | | | Ko S H | 13 | 14 |
| | | | | 8 | B Setiabudi | 21 | 13 | 21 | | | | | | | | |
| Kok J H | 21 | 24 | | | Kok J H | 10 | 21 | 17 | | | | | | | | |
| Ye HK | 16 | 22 | | | | | | | 8 | B Setiabudi | 19 | 21 | | | | |
| A Karami | 11 | 6 | | | | | | | | Ko S H | 21 | 23 | | | | |
| Ko S H | 21 | 21 | | | Ko S H | 21 | 21 | | | | | | | | | |
| | | | | | Vong K W | 9 | 12 | | | | | | | | | |

#### Section 2

| 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 | S P Belawa | 21 | 21 | | | | | | | | | | | |
| D M Ng W S | 21 | 21 | | D M Ng W S | 19 | 17 | | | | | | | | | | | |
| Lee R H | 14 | 9 | | | | | | 3 | S P Belawa | 12 | 21 | 9 | | | | | |
| | | | | | | | | | Ren CM | 21 | 11 | 21 | | | | | |
| | | | | Ren CM | 21 | 16 | 21 | | | | | | | | | | |
| Jin Y | 21 | 21 | | Jin Y | 16 | 21 | 16 | | | | | | | | | | |
| G Singha | 8 | 10 | | | | | | | | | | | | Ren CM | 12 | 21 | 19 |
| | | | | | | | | | | | | | 5 | Li YZ | 21 | 19 | 21 |
| | | | 5 | Li YZ | 21 | 21 | | | | | | | | | | | |
| Liao J-f | 21 | 21 | | Liao J-f | 11 | 16 | | | | | | | | | | | |
| D Abeywickrama | 9 | 17 | | | | | | 5 | Li YZ | 21 | 21 | | | | | | |
| Hong F | 10 | 13 | | | | | | | N Mangkornloi | 14 | 8 | | | | | | |
| N Mangkornloi | 21 | 21 | | N Mangkornloi | 21 | 21 | | | | | | | | | | | |
| S Gupta | 21 | 21 | | S Gupta | 17 | 10 | | | | | | | | | | | |
| P Maharjan | 10 | 3 | | | | | | | | | | | | | | | |

### Bottom half
#### Section 3

| 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 |
| Chiang C-w | 21 | 21 | | | | | | | | | | | | |
| Ao F L | 11 | 10 | | Chiang C-w | 21 | 21 | | | | | | | | |
| S Lkhaasuren | 13 | 6 | | Fazriq R | 16 | 17 | | | | | | | | |
| Fazriq R | 21 | 21 | | | | | | Chiang C-w | 21 | 21 | | | | |
| S Subramanian | 21 | 21 | | | | | 7 | Y Ramlie | 18 | 18 | | | | |
| Md. A H Lukman | 1 | 10 | | S Subramanian | 19 | 14 | | | | | | | | |
| | | | 7 | Y Ramlie | 21 | 21 | | | | | | | | |
| | | | | | | | | | | | | Chiang C-w | 14 | 19 |
| Lee H-j | 21 | 21 | | | | | | | | | 4 | Liu L | 21 | 21 |
| Poon C L | 19 | 11 | | Lee H-j | 17 | 16 | | | | | | | | |
| S Piyawatcharavijit | 21 | 21 | | S Piyawatcharavijit | 21 | 21 | | | | | | | | |
| Nguyễn Đ H | 11 | 12 | | | | | | S Piyawatcharavijit | 17 | 16 | | | | |
| B Lee | 16 | 12 | | | | | 4 | Liu L | 21 | 21 | | | | |
| P Dahal | 21 | 21 | | P Dahal | 5 | 13 | | | | | | | | |
| | | | 4 | Liu L | 21 | 21 | | | | | | | | |

#### Section 4

| 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 |
| S Enkhbat | 27 | 9 | 21 | | | | | | | | | | | | | | | |
| Pui C C | 25 | 21 | 19 | | S Enkhbat | 11 | 7 | | | | | | | | | | | |
| L de Silva | 9 | 17 | | | S Karunakaran | 21 | 21 | | | | | | | | | | | |
| S Karunakaran | 21 | 21 | | | | | | | | S Karunakaran | 21 | 10 | 7 | | | | | |
| W Chuenkha | 11 | 15 | | | | | | | 6 | Park H-s | 12 | 21 | 21 | | | | | |
| Wang YF | 21 | 21 | | | Wang YF | 16 | 16 | | | | | | | | | | | |
| | | | | 6 | Park H-s | 21 | 21 | | | | | | | | | | | |
| | | | | | | | | | | | | | | 6 | Park H-s | 14 | 21 | 14 |
| Su L-y | 21 | 21 | | | | | | | | | | | | | Su L-y | 21 | 14 | 21 |
| J Gunawan | 7 | 9 | | | Su L-y | 21 | 21 | | | | | | | | | | | |
| K A Soad | 8 | 12 | | | N Yap | 8 | 12 | | | | | | | | | | | |
| N Yap | 21 | 21 | | | | | | | | Su L-y | 21 | 21 | | | | | | |
| Dong TY | 14 | 21 | 21 | | | | | | | Dong TY | 17 | 17 | | | | | | |
| Lee S Y | 21 | 13 | 16 | | Dong TY | 21 | 10 | 21 | | | | | | | | | | |
| | | | | 2 | C Adinata | 13 | 21 | 19 | | | | | | | | | | |