Stadium: Court Centre Round: 25 Ground: Hardcourt outdoor
| ITF - Nakhon Si Thammarat M25 | 2023/06/13 04:50 | Koki Matsuda v Krittin Koaykul | 6-3,4-6,6-7 |
| ITF - Kashiwa M25 | 2023/04/02 02:30 | Koki Matsuda v Krittin Koaykul | 6-3,6-3 |
| Challenger Playford | 2023/10/23 02:25 | Jayden Court v Koki Matsuda | 7-5,7-6 |
| Challenger Playford | 2023/10/22 04:15 | Koki Matsuda v Kody Pearson | 6-4,7-6 |
| ITF - Takasaki M25 | 2023/09/21 05:15 | Tatsuma Ito v Koki Matsuda | 7-6,1-6,6-3 |
| ITF - Takasaki M25 | 2023/09/19 00:55 | Yuta Kikuchi v Koki Matsuda | 3-6,2-6 |
| ITF - Sapporo M25 | 2023/09/15 05:35 | Naoki Nakagawa v Koki Matsuda | 6-4,6-2 |
| ITF - Sapporo M25 | 2023/09/15 00:55 | Koki Matsuda v Daisuke Sumizawa | 6-0,7-6 |
| ITF - Sapporo M25 | 2023/09/12 05:40 | Takuya Kumasaka v Koki Matsuda | 0-6,2-6 |
| ITF - Sapporo M25 | 2023/09/04 01:00 | Koki Matsuda v Ko Suzuki | 6-1,4-6,7-10 |
| ITF - Hua Hin M15 | 2023/11/09 05:20 | Krittin Koaykul v Filip Peliwo | 1-6,2-6 |
| ITF - Hua Hin M15 | 2023/11/08 04:50 | Michael Agwi v Krittin Koaykul | 4-6,3-6 |
| ITF - Nakhon Si Thammarat M15 | 2023/09/05 02:00 | Francois Musitelli v Krittin Koaykul | 6-3,6-2 |
| ITF - Nakhon Si Thammarat M15 | 2023/08/29 04:40 | Krittin Koaykul v Sidharth Rawat | 4-6,2-6 |
| ITF - Nakhon Si Thammarat M15 | 2023/08/20 05:00 | Rob Reynolds v Krittin Koaykul | 6-3,7-6 |
| ITF - Nakhon Si Thammarat M15 | 2023/07/19 03:40 | Tommy Czaplinski v Krittin Koaykul | 6-4,6-2 |
| ITF - Nakhon Si Thammarat M15 | 2023/07/10 04:05 | Krittin Koaykul v Tanakorn Srirat | 7-6,7-6 |
| ITF - Nakhon Si Thammarat M15 - Kwalifikacje | 2023/07/09 06:00 | Krittin Koaykul v Eric Padgham | 7-6,6-4 |