Kunlavut Vitidsarn
Kunlavut Vitidsarn is a Thai badminton player. He was three-times World Junior champion, winning in 2017, 2018 and 2019. Vitidsarn became the first men's singles player to win three World Junior Championships title, joining Ratchanok Intanon and Chen Qingchen as a three-time winner of the World Junior title in the same discipline. He claimed the gold medal at the Asian Junior Championships in 2019, where he previously won a silver in 2018 and bronze in 2017. Vitidsarn participated at the 2018 Summer Youth Olympics, and was part of the team Omega took the silver medal in the mixed team event.
Achievements
BWF World Junior Championships
Boys' singles| Year | Venue | Opponent | Score | Result |
| 2019 | Kazan Gymnastics Center, Kazan, Russia |  Christo Popov | 21–8, 21–11 | Gold |
| 2018 | Markham Pan Am Centre, Markham, Canada |  Kodai Naraoka | 21–9, 21–11 | Gold |
| 2017 | GOR Among Rogo, Yogyakarta, Indonesia |  Leong Jun Hao | 17–21, 21–15, 21–9 | Gold |
Asian Junior Championships
Boys' singles| Year | Venue | Opponent | Score | Result |
| 2019 | Suzhou Olympic Sports Centre, Suzhou, China |  Liu Liang | 21–14, 21–13 | Gold |
| 2018 | Jaya Raya Sports Hall Training Center, Jakarta, Indonesia |  Lakshya Sen | 19–21, 18–21 | Silver |
| 2017 | Jaya Raya Sports Hall Training Center, Jakarta, Indonesia | Leong Jun Hao | 21–19, 14–21, 21–23 | Bronze |
BWF World Tour (1 runner-up)
The BWF World Tour, announced on 19 March 2017 and implemented in 2018, is a series of elite badminton tournaments, sanctioned by Badminton World Federation. The BWF World Tour are divided into six levels, namely World Tour Finals, Super 1000, Super 750, Super 500, Super 300, and the BWF Tour Super 100.Men's singles
| Year | Tournament | Level | Opponent | Score | Result |
| 2020 | Spain Masters | Super 300 |  Viktor Axelsen | 16–21, 13–21 | Runner-up |
BWF International Challenge/Series (5 titles, 2 runners-up)
Men's singles| Year | Tournament | Opponent | Score | Result |
| 2019 | Mongolia International | Kodai Naraoka | 21–9, 17–21, 21–23 | Runner-up |
| 2019 | Spanish International |  Toby Penty | 21–14, 21–14 | Winner |
| 2019 | Finnish Open |  Lin Chun-yi | 21–16, 18–21, 21–14 | Winner |
| 2019 | Polish Open | Lakshya Sen | 21–17, 21–14 | Winner |
| 2019 | Iran Fajr International | Li Shifeng | 21–18, 21–17 | Winner |
| 2018 | Nepal International | Soo Teck Zhi | 20–22, 22–20, 21–9 | Winner |
| 2018 | India International | Lakshya Sen | 15–21, 10–21 | Runner-up |
BWF Junior International (11 titles, 2 runners-up)
Boys' singles| Year | Tournament | Opponent | Score | Result |
| 2017 | Banthongyord Junior International | Fong Hau Sim | 21–14, 21–13 | Winner |
| 2017 | Jaya Raya Junior International |  Ikhsan Leonardo Imanuel Rumbay | 21–17, 21–7 | Winner |
| 2017 | India Junior International | B. M. Rahul Bharadwaj | 21–16, 21–11 | Winner |
| 2017 | Singapore Youth International |  Joel Koh | 21–13, 21–13 | Winner |
| 2018 | Dutch Junior International | Li Shifeng | 21–18, 21–14 | Winner |
| 2018 | German Junior International | Li Shifeng | 21–15, 21–11 | Winner |
| 2018 | Jaya Raya Junior International | Ikhsan Leonardo Imanuel Rumbay | 21–14, 21–9 | Winner |
| 2018 | Banthongyord Junior International | Jason Teh | 21–16, 21–15 | Winner |
| 2019 | Banthongyord Junior International | Bobby Setiabudi | 21–16, 26–24 | Winner |
Boys' doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2015 | White Nights Junior International |  Pacharapol Nipornram |  Rodion Alimov Pavel Kotsarenko | 21–14, 21–23, 13–21 | Runner-up |
| 2017 | India Junior International | Pacharapol Nipornram | Rehan Naufal Kusharjanto Rinov Rivaldy | 9–21, 13–21 | Runner-up |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2018 | Banthongyord Junior International | Phittayaporn Chaiwan | Hiroki Midorikawa Natsu Saito | 23–21, 21–18 | Winner |
| 2019 | Banthongyord Junior International | Phittayaporn Chaiwan | Di Zijian Li Yijing | 21–11, 21–17 | Winner |