Stadium: Court 5 Round: 44 Ground: Hardcourt outdoor
| Challenger Bangkok 2 | 2020/01/20 03:00 | Aslan Karatsev v Natthasith Kunsuwan | 6-4,6-3 |
| ITF M15 Hong Kong | 2020/01/06 02:00 | Wei-De Lin v Natthasith Kunsuwan | 6-1,3-6,10-6 |
| ITF M15 Nonthaburi | 2019/12/03 04:35 | Qun Gao v Natthasith Kunsuwan | 6-3,6-1 |
| ITF M15 Nonthaburi | 2019/12/02 02:30 | Sergey Shipilov v Natthasith Kunsuwan | 1-6,7-6,5-10 |
| ITF M15 Nonthaburi Qual | 2019/12/01 06:10 | Natthasith Kunsuwan v Rishi Reddy | 6-4,6-0 |
| ITF M15 Nonthaburi | 2019/11/25 03:50 | Natthasith Kunsuwan v Daisuke Sumizawa | 7-6,6-7,9-11 |
| ITF M15 Nonthaburi | 2019/11/24 06:45 | Natthasith Kunsuwan v Thanapet Chanta | 7-6,4-6,10-3 |
| ITF M15 Nanchang | 2019/10/03 05:00 | Natthasith Kunsuwan v Taisei Ichikawa | 0-6,6-7 |
| ITF M15 Nonthaburi | 2019/12/05 04:15 | Rishab Agarwal v Cheong-Eui Kim | 6-4,3-6,6-3 |
| ITF M15 Nonthaburi | 2019/11/26 05:55 | Danylo Kalenichenko v Cheong-Eui Kim | 6-2,6-2 |
| ITF M15 Changwon | 2019/10/17 00:55 | Cheong-Eui Kim v Hong Chung | 3-6,6-3,3-6 |
| ITF M15 Changwon | 2019/10/15 03:10 | Cheong-Eui Kim v Issei Okamura | 6-4,4-6,6-4 |
| ITF M15 Jakarta | 2019/08/14 02:30 | Aaron Schmid v Cheong-Eui Kim | 6-3,6-3 |
| ITF M15 Anseong | 2019/06/30 03:00 | Haru Inoue v Cheong-Eui Kim | 6-4,6-0 |
| ITF M15 Anseong | 2019/06/29 04:00 | Kelsey Stevenson v Cheong-Eui Kim | 1-6,4-6 |
| ITF M15 Anseong | 2019/06/28 03:00 | Jung-Woong Na v Cheong-Eui Kim | 2-6,2-6 |