# 2018 Badminton Asia Junior Championships – Boys' singles

The boys' singles tournament of the 2018 Badminton Asia Junior Championships was held from July 18 to 22. Leong Jun Hao from Malaysia clinched this title in the last edition. Thailand’s reigning World Junior Champion Kunlavut Vitidsarn leads the seedings this year.

## Seeded

* Kunlavut Vitidsarn (final)
* Li Shifeng (quarterfinals)
* Bai Yupeng (semifinals)
* Ikhsan Rumbay (semifinals)
* Chen Shiau-cheng (third round)
* Lakshya Sen (champion)
* Alberto Alvin Yulianto (quarterfinals)
* Su Li-yang (second round)
* Dmitriy Panarin (second round)
* Karono (fourth round)
* Saran Jamsri (fourth round)
* Joel Koh (fourth round)
* Nguyễn Hải Đăng (second round)
* Yu Sheng-po (third round)
* Ng Tze Yong (quarterfinals)
* Kiran George (fourth round)

## Draw
### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Kunlavut Vitidsarn | 23 | 21 | | | | | | | | |
| | Christian Adinata | 21 | 8 | | | | | | | | |
| | Christian Adinata | 21 | 8 | 1 | Kunlavut Vitidsarn | 21 | 21 | | | | |
| | | | | 3 | Bai Yupeng | 14 | 12 | | | | |
| 3 | Bai Yupeng | 21 | 22 | 3 | Bai Yupeng | 14 | 12 | | | | |
| 7 | Alberto Alvin Yulianto | 15 | 20 | | | | | | | | |
| 7 | Alberto Alvin Yulianto | 15 | 20 | | | | | 1 | Kunlavut Vitidsarn | 19 | 18 |
| | | | | | | | | 6 | Lakshya Sen | 21 | 21 |
| 15 | Ng Tze Yong | 14 | 19 | | | | | | | | | 6 | Lakshya Sen | 21 | 21 |
| 4 | Ikhsan Rumbay | 21 | 21 | | | | | | | | |
| 4 | Ikhsan Rumbay | 21 | 21 | 4 | Ikhsan Rumbay | 7 | 14 | | | | |
| | | | | 6 | Lakshya Sen | 21 | 21 | | | | |
| 6 | Lakshya Sen | 21 | 21 | 6 | Lakshya Sen | 21 | 21 | | | | |
| 2 | Li Shifeng | 14 | 12 | | | | | | | | |

### Top half
#### Section 1

| Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round |
| 1 | K Vitidsarn | 21 | 21 | | | | | | | | | | |
| | Nguyen A G H | 9 | 8 | | | | | | | | | | |
| | | | | | 1 | K Vitidsarn | 21 | 21 | | | | | |
| | | | | | | D M Ng | 16 | 12 | | | | | |
| | C Dias | 14 | 12 | | | | | | | | | | |
| | D M Ng | 21 | 21 | | | | | | | | | | |
| | | | | | | | | | | 1 | K Vitidsarn | 21 | 21 |
| | | | | | | | | | | 10 | Karono | 16 | 9 |
| 10 | Karono | 21 | 16 | 21 | | | | | | | | | |
| | A F Sanjay | 16 | 21 | 17 | | | | | | | | | |
| | | | | | 10 | Karono | 21 | 14 | 28 | | | | |
| | | | | | | H Nakayama | 18 | 21 | 26 | | | | |
| | A Solaiman | 6 | 8 | | | | | | | | | | |
| | H Nakayama | 21 | 21 | | | | | | | | | | |

#### Section 2

| First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round |
| | | | 5 | Chen S-c | 21 | 21 | | | | | | | | |
| | | | | A Karami | 7 | 14 | | | | | | | | |
| | | | | | | | 5 | Chen S-c | 21 | 18 | 19 | | | |
| | | | | | | | | Chia W J | 17 | 21 | 21 | | | |
| | | | | J Gunawan | 11 | 13 | | | | | | | | |
| | | | | Chia W J | 21 | 21 | | | | | | | | |
| | | | | | | | | | | | | Chia W J | 14 | 18 |
| | | | | | | | | | | | | C Adinata | 21 | 21 |
| | | | 9 | D Panarin | 19 | 15 | | | | | | | | |
| | | | | Park H-s | 21 | 21 | | | | | | | | |
| | | | | | | | | Park H-s | 15 | 15 | | | | |
| | | | | | | | | C Adinata | 21 | 21 | | | | |
| | | | | Liu L | 19 | 20 | | | | | | | | |
| A Alothman | 5 | 6 | | C Adinata | 21 | 22 | | | | | | | | |
| C Adinata | 21 | 21 | | | | | | | | | | | | |

#### Section 3

| Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| 3 | Bai YP | 21 | 21 | | | | | | | | | |
| | L De Silva | 8 | 13 | | | | | | | | | |
| | | | | 3 | Bai YP | 21 | 21 | | | | | |
| | | | | | M A H Lukman | 6 | 6 | | | | | |
| | M A H Lukman | 21 | 21 | | | | | | | | | |
| | T Gombodorj | 11 | 6 | | | | | | | | | |
| | | | | | | | | 3 | Bai YP | 19 | 21 | 21 |
| | | | | | | | | | S Piyawatcharavijit | 21 | 14 | 12 |
| 14 | Yu S-p | 21 | 21 | | | | | | | | | |
| | N Alghamdi | 4 | 3 | | | | | | | | | |
| | | | | 14 | Yu S-p | 18 | 11 | | | | | |
| | | | | | S Piyawatcharavijit | 21 | 21 | | | | | |
| | N Yap Z M | 17 | 13 | | | | | | | | | |
| | S Piyawatcharavijit | 21 | 21 | | | | | | | | | |

#### 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 | Fourth round | Fourth round | Fourth round | Fourth round |
| | | | 7 | A A Yulianto | 21 | 21 | | | | | | | | | |
| | | | | J Wang | 7 | 16 | | | | | | | | | |
| | | | | | | | 7 | A A Yulianto | 21 | 21 | | | | | |
| | | | | | | | | Pui P F | 15 | 8 | | | | | |
| | | | | Kaung M H | 6 | 5 | | | | | | | | | |
| | | | | Pui P F | 21 | 21 | | | | | | | | | |
| | | | | | | | | | | | | 7 | A A Yulianto | 21 | 21 |
| | | | | | | | | | | | | 16 | K George | 19 | 19 |
| | | | 16 | K George | 24 | 21 | | | | | | | | | |
| | | | | Lim C K | 22 | 16 | | | | | | | | | |
| | | | | | | | 16 | K George | 21 | 21 | 21 | | | | |
| | | | | | | | | Choi J-h | 16 | 23 | 12 | | | | |
| | | | | Choi J-h | 21 | 21 | | | | | | | | | |
| T Kato | 21 | 21 | | T Kato | 13 | 17 | | | | | | | | | |
| Nguyen T T | 9 | 15 | | | | | | | | | | | | | |

### Bottom half
#### Section 5

| 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 | Fourth round | Fourth round | Fourth round | Fourth round |
| Kaung A | 21 | 17 | 21 | | | | | | | | | | | | | |
| M Alghamdi | 16 | 21 | 10 | | Kaung A | 5 | 3 | | | | | | | | | |
| | | | | | Ko S H | 21 | 21 | | | | | | | | | |
| | | | | | | | | | Ko S H | 18 | 14 | | | | | |
| | | | | | | | | 15 | Ng T Y | 21 | 21 | | | | | |
| | | | | | S Enkhbat | 13 | 10 | | | | | | | | | |
| | | | | 15 | Ng T Y | 21 | 21 | | | | | | | | | |
| | | | | | | | | | | | | | 15 | Ng T Y | 21 | 21 |
| | | | | | | | | | | | | | | P Rajawat | 15 | 14 |
| | | | | | V Fernando | 8 | 4 | | | | | | | | | |
| | | | | | P Rajawat | 21 | 21 | | | | | | | | | |
| | | | | | | | | | P Rajawat | 21 | 13 | 23 | | | | |
| | | | | | | | | | R Ichii | 18 | 21 | 21 | | | | |
| | | | | | R Ichii | 21 | 21 | | | | | | | | | |
| | | | | 8 | Su L-y | 17 | 17 | | | | | | | | | |

#### Section 6

| Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round |
| | Ao F L | 14 | 12 | | | | | | | | |
| | S S M S Ullah | 21 | 21 | | | | | | | | |
| | | | | | S S M S Ullah | 12 | 7 | | | | |
| | | | | 12 | J Koh | 21 | 21 | | | | |
| | K Tajibullayev | 7 | 8 | | | | | | | | |
| 12 | J Koh | 21 | 21 | | | | | | | | |
| | | | | | | | | 12 | J Koh | 18 | 11 |
| | | | | | | | | 4 | I Rumbay | 21 | 21 |
| | Lee H-j | 14 | 17 | | | | | | | | |
| | P Srimanta | 21 | 21 | | | | | | | | |
| | | | | | P Srimanta | 12 | 12 | | | | |
| | | | | 4 | I Rumbay | 21 | 21 | | | | |
| | Cao YF | 8 | 22 | | | | | | | | |
| 4 | I Rumbay | 21 | 24 | | | | | | | | |

#### Section 7

| 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 | Fourth round | Fourth round | Fourth round | Fourth round |
| S P Belawa | 21 | 21 | | | | | | | | | | | | | | |
| Zwe Y N | 4 | 6 | | S P Belawa | 21 | 21 | | | | | | | | | | |
| | | | | J Kok J H | 15 | 14 | | | | | | | | | | |
| | | | | | | | | | S P Belawa | 19 | 21 | 17 | | | | |
| | | | | | | | | 11 | S Jamsri | 21 | 19 | 21 | | | | |
| | | | | Mak P N | 21 | 18 | 15 | | | | | | | | | |
| | | | 11 | S Jamsri | 9 | 21 | 21 | | | | | | | | | |
| | | | | | | | | | | | | | 11 | S Jamsri | 15 | 16 |
| | | | | | | | | | | | | | 6 | L Sen | 21 | 21 |
| | | | | G Singha | 11 | 1 | | | | | | | | | | |
| | | | | R Hatano | 21 | 21 | | | | | | | | | | |
| | | | | | | | | | R Hatano | 6 | 21 | 15 | | | | |
| | | | | | | | | 6 | L Sen | 21 | 18 | 21 | | | | |
| | | | | Kim H-j | 13 | 11 | | | | | | | | | | |
| | | | 6 | L Sen | 21 | 21 | | | | | | | | | | |

#### Section 8

| Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round |
| | A Alharthi | 2 | 3 | | | | | | | | | |
| | Y Ramlie | 21 | 21 | | | | | | | | | |
| | | | | | | Y Ramlie | 13 | 13 | | | | |
| | | | | | | Yang Y | 21 | 21 | | | | |
| | Yang Y | 9 | 21 | 21 | | | | | | | | |
| 13 | Nguyễn H Đ | 21 | 15 | 9 | | | | | | | | |
| | | | | | | | | | | Yang Y | 10 | 17 |
| | | | | | | | | | 2 | Li SF | 21 | 21 |
| | D Abdullayev | 15 | 12 | | | | | | | | | |
| | T N Ambegoda | 21 | 21 | | | | | | | | | |
| | | | | | | T N Ambegoda | 12 | 15 | | | | |
| | | | | | 2 | Li SF | 21 | 21 | | | | |
| | Lee R H | 8 | 5 | | | | | | | | | |
| 2 | Li SF | 21 | 21 | | | | | | | | | |