| Challenger Bangkok Qual | 2017/12/31 03:00 | Cem Ilkel v Kasidit Samrej | 6-4,6-4 |
| Challenger Bangkok Qual | 2017/12/30 03:00 | Tanakorn Srirat v Kasidit Samrej | 4-6,1-6 |
| ITF Thailand F7 Qual | 2017/09/30 02:30 | Natthasith Kunsuwan v Kasidit Samrej | 7-6,6-0 |
| ITF Thailand F6 Qual | 2017/08/12 04:30 | Li-Wei Tan v Kasidit Samrej | 6-3,6-3 |
| ITF Thailand F1 | 2017/06/03 06:00 | Kasidit Samrej v Arjun Mariyappa | 6-0,6-2 |
| ITF Thailand F5 | 2016/12/17 03:30 | Oleg Kurbatov v Kasidit Samrej | 6-4,6-0 |
| ITF Thailand F2 | 2016/08/27 06:25 | Joan Soler v Kasidit Samrej | 6-0,6-0 |
| ITF Thailand F4 | 2016/08/20 03:00 | Zhaoyi Cao v Kasidit Samrej | 4-6,6-1,6-1 |
| ITF Thailand F2 | 2018/08/26 03:30 | Naru Shirafuji v Ren Nakamura | 6-1,6-3 |
| ITF Thailand F2 | 2018/08/25 04:00 | Thammarat Kamchai v Ren Nakamura | 4-6,0-6 |
| ITF Korea F5 | 2018/08/21 01:00 | Ren Nakamura v Ji Hoon Son | 6-4,4-6,3-6 |
| ITF Korea F5 | 2018/08/20 01:00 | Ren Nakamura v Ki Su Jung | 6-2,6-0 |
| ITF Korea F5 | 2018/08/18 01:00 | Ren Nakamura v Mingyuan Yang | 6-1,6-0 |
| ITF Korea F4 | 2018/08/13 03:00 | Ren Nakamura v Tae-Woo Lee | 1-6,1-6 |
| ITF Austria F5 Qual | 2018/07/29 10:30 | Ren Nakamura v Vital Flurin Leuch | 6-3,6-7,4-6 |
| ITF Austria F4 Qual | 2018/07/21 10:00 | Andreas Kramer v Ren Nakamura | 6-3,6-4 |