Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Chiang Rai | 2022/06/13 02:00 | Chuhan Wang v Guntinun Sootinun-Opart | 3-6,6-3,10-12 |
| ITF M15 Chiang Rai | 2022/06/12 05:05 | Pumiphat Sukkho v Guntinun Sootinun-Opart | 3-6,1-6 |
| ITF M25 Chiang Rai | 2022/06/07 03:55 | Pawit Sornlaksup v Guntinun Sootinun-Opart | 6-2,6-3 |
| ITF M25 Chiang Rai Qual | 2022/06/05 02:00 | Patorn Hanchaikul v Guntinun Sootinun-Opart | 4-6,6-2,7-10 |
| ITF M25 Chiang Rai | 2022/06/01 06:00 | Guntinun Sootinun-Opart v Kasidit Samrej | 2-6,5-7 |
| ITF M25 Chiang Rai | 2022/05/31 04:15 | Arjun Mehrotra v Guntinun Sootinun-Opart | 4-6,6-3,8-10 |
| ITF M25 Chiang Rai | 2022/05/30 04:25 | Panathon Sooksod v Guntinun Sootinun-Opart | 2-6,2-6 |
| ITF M15 Chiang Rai | 2022/04/12 02:00 | Guntinun Sootinun-Opart v Taisei Ichikawa | 5-7,0-6 |
| ITF M15 Chiang Rai | 2022/06/13 06:40 | Rajata Thamcharoensatit v Thantub Suksumrarn | 2-6,2-6 |
| ITF M15 Chiang Rai | 2022/06/12 09:25 | Mungmun Ohmarak v Thantub Suksumrarn | 0-6,2-6 |
| ITF M25 Chiang Rai | 2022/06/01 04:35 | Rubin Statham v Thantub Suksumrarn | 6-1,6-1 |
| ITF M15 Chiang Rai | 2022/04/26 01:55 | Colin Markes v Thantub Suksumrarn | 6-1,6-4 |
| ITF M15 Chiang Rai | 2022/04/25 02:00 | Thantub Suksumrarn v Mario G Fernandez | 6-1,6-4 |
| ITF M15 Chiang Rai Qual | 2022/04/24 05:40 | Ki Lung NG v Thantub Suksumrarn | 4-6,1-6 |
| ITF M15 Chiang Rai | 2022/04/20 03:20 | Yuttana Charoenphon v Thantub Suksumrarn | 6-4,3-6,6-3 |
| ITF M15 Chiang Rai | 2022/04/19 02:00 | Thantub Suksumrarn v Issei Okamura | 6-3,7-6 |