Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Chiang Rai Qual | 2022/04/17 02:00 | Kazuma Kawachi v Natthasith Kunsuwan | 6-3,6-7,7-10 |
| ITF Thailand F7 Qual | 2017/10/01 02:30 | Kazuma Kawachi v Natthasith Kunsuwan | 6-2,6-4 |
| ITF M15 Chiang Rai | 2022/04/26 02:00 | Kazuma Kawachi v Dylan Salton | 6-4,6-0 |
| ITF M15 Chiang Rai | 2022/04/25 03:05 | Kazuma Kawachi v Imran D Abd Hazli | 7-6,6-1 |
| ITF M15 Chiang Rai Qual | 2022/04/24 02:00 | Kazuma Kawachi v Chukang Wang | 6-1,7-6 |
| ITF M15 Chiang Rai Qual | 2022/04/17 02:00 | Kazuma Kawachi v Natthasith Kunsuwan | 6-3,6-7,7-10 |
| ITF M25 Canberra | 2022/03/31 04:45 | Philip Sekulic v Kazuma Kawachi | 2-6,6-1,7-6 |
| ITF M25 Canberra | 2022/03/30 02:45 | Tomislav E Papac v Kazuma Kawachi | 3-6,7-6,0-6 |
| ITF M25 Canberra | 2022/03/22 23:00 | Kazuma Kawachi v Matthew Romios | 2-6,3-6 |
| ITF M25 Bendigo | 2022/03/07 03:30 | Kazuma Kawachi v Jayden Court | 4-6,4-6 |
| ITF M15 Chiang Rai | 2022/04/18 02:00 | Natthasith Kunsuwan v Thantub Suksumrarn | 7-5,3-6,9-11 |
| ITF M15 Chiang Rai Qual | 2022/04/17 02:00 | Kazuma Kawachi v Natthasith Kunsuwan | 6-3,6-7,7-10 |
| ITF M15 Chiang Rai Qual | 2022/04/10 04:20 | Natthasith Kunsuwan v Digvijay Pratap Singh | 7-6,0-6,10-12 |
| ITF M25 Monastir | 2022/03/28 09:00 | Alexis Boureau v Natthasith Kunsuwan | 6-3,6-0 |
| ITF M25 Monastir | 2022/03/27 10:00 | Natthasith Kunsuwan v Filippo Martini | 6-3,6-2 |
| ITF M25 Monastir | 2022/03/22 10:30 | Natthasith Kunsuwan v Pietro Pampanin | 6-4,4-6,1-10 |
| ITF M15 Monastir | 2021/10/25 10:00 | Natthasith Kunsuwan v Xian Yao Zhou | 3-6,6-7 |
| ITF M15 Monastir | 2021/10/20 14:30 | Natthasith Kunsuwan v Sascha Gueymard Wayenburg | 1-6,2-6 |