| Macau Open Qual | 10/29 01:30 | - | Yin Chak Chan v Kantawat Leelavechabutr | L | 2-0 | |
| Thailand Open Qual | 07/30 03:00 | - | Kantawat Leelavechabutr v Sourabh Verma | L | 0-2 | |
| Osaka Int. | 04/04 00:00 | - | Takuma Kawamoto v Kantawat Leelavechabutr | D |
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| Giraldilla Int. XD | 02/23 07:20 | - | Minoru Koga v Kantawat Leelavechabutr | L | 2-0 | |
| Giraldilla Int. XD | 02/22 07:30 | - | Daisuke Omoto v Kantawat Leelavechabutr | W | 0-2 | |
| Swiss Open WD Qual | 01/08 02:40 | 1 | Koki Watanabe v Kantawat Leelavechabutr | L | 2-1 | |
| Swiss Open WD Qual | 11/20 12:16 | - | Kantawat Leelavechabutr v Harsheel Dani | L | 0-2 | |
| Swiss Open WD Qual | 11/20 04:10 | - | Kantawat Leelavechabutr v Kartik Jindal | W | 1-0 | |
| Swiss Open WD Qual | 09/18 11:00 | 6 | Ikhsan L I Rumbay v Kantawat Leelavechabutr | L | 2-1 | |
| Giraldilla Int. XD | 08/08 14:59 | - | Kantawat Leelavechabutr v Wei Feng Chong | L | 0-2 | |
| Giraldilla Int. XD | 08/08 13:35 | 5 | Kantawat Leelavechabutr v Wei Feng Chong | L | 0-2 | |
| Giraldilla Int. XD | 08/07 13:20 | 6 | June Wei Cheam v Kantawat Leelavechabutr | W | 0-2 | |
| Giraldilla Int. XD | 07/24 01:40 | 6 | Seong Hyun Son v Kantawat Leelavechabutr | L | 2-1 | |
| Swiss Open WD Qual | 07/10 02:35 | 1 | Kantawat Leelavechabutr v Jun Hao Leong | L | 0-2 | |
| Giraldilla Int. XD | 06/16 09:00 | 1 | Toma Junior Popov v Kantawat Leelavechabutr | L | 2-1 | |
| Giraldilla Int. XD | 06/15 15:45 | 1 | Kantawat Leelavechabutr v Victor Svendsen | - | Retired | |
| Swiss Open WD Qual | 06/14 13:05 | 1 | Kantawat Leelavechabutr v Dimitar Yanakiev | W | 2-0 | |
| Swiss Open WD Qual | 01/09 02:00 | 1 | Jun Hao Leong v Kantawat Leelavechabutr | L | 2-1 | |
| Giraldilla Int. XD | 10/25 02:00 | 1 | Enzi Shafira v Kantawat Leelavechabutr | L | 2-1 | |
| Indonesia Masters XD | 05/31 06:40 | 5 | Kunlavut Vitidsarn v Kantawat Leelavechabutr | L | 2-0 | |
| Indonesia Masters XD | 05/30 12:00 | 6 | Soren Toft v Kantawat Leelavechabutr | W | 1-2 | |
| Giraldilla Int. XD | 05/01 09:00 | 1 | Siddharth Pratap Singh v Kantawat Leelavechabutr | W | 1-2 | |
| All England Open | 02/08 11:55 | 5 | Kantawat Leelavechabutr v Khosit Phetpradab | L | 0-2 | |
| All England Open | 02/07 11:10 | 6 | Kantawat Leelavechabutr v Yulianto Ilham Sri | W | 2-0 | |
| Indonesia Masters XD | 10/12 02:10 | 6 | Kantawat Leelavechabutr v Hsuan Yi Hsueh | L | 0-3 | |
| All England Open | 10/04 14:05 | 6 | Kantawat Leelavechabutr v Wisnu Yuli Prasetyo | L | 0-2 | |
| Indonesia Masters | 09/07 11:20 | 6 | Yuxiang Huang v Kantawat Leelavechabutr | L | 2-0 |