Stadium: Center Court A Round: 54 Ground: Hardcourt outdoor
| ITF - Tainan M25 | 2023/08/15 04:45 | Koki Matsuda v Makoto Ochi | 3-6,7-5,4-6 |
| ITF - Dżakarta M25 | 2023/08/09 05:30 | Koki Matsuda v Arthur Weber | 2-6,2-6 |
| UTR Pro - Osaka | 2023/07/30 02:00 | Koki Matsuda v Rikuto Yamaguchi | 7-6,6-1 |
| UTR Pro - Osaka | 2023/07/29 01:05 | Koki Matsuda v Min Soo Chae | 7-5,5-2 |
| UTR Pro - Osaka | 2023/07/27 07:32 | Koki Matsuda v Jake Bhangdia | 6-2,6-4 |
| UTR Pro - Osaka | 2023/07/26 04:00 | Mizuki Kawada v Koki Matsuda | 0-6,2-6 |
| UTR Pro - Osaka | 2023/07/25 02:00 | Yuto Okuchi v Koki Matsuda | 3-6,3-6 |
| ITF - Nakhon Si Thammarat M15 | 2023/07/05 06:15 | Ji Hoon Son v Koki Matsuda | 6-4,3-6,6-3 |
| ITF - Tainan M25 | 2023/08/20 02:00 | Ko Suzuki v Kai-I Wang | 1-6,6-0,4-10 |
| ITF - Tainan M25 | 2023/08/15 03:55 | Lucio Carnevalle v Ko Suzuki | 3-6,6-2,6-2 |
| ITF - Tainan M25 | 2023/08/14 02:00 | Ko Suzuki v Tzu Li Chang | 6-2,6-3 |
| ITF - Tainan M25 | 2023/08/13 02:00 | Ko Suzuki v Jeffrey Hsu | 6-3,6-2 |
| ITF - Anseong M25 | 2023/06/21 04:10 | Daisuke Sumizawa v Ko Suzuki | 7-5,6-3 |
| ITF - Anseong M25 | 2023/06/19 05:40 | Ko Suzuki v Hayeon Seong | 6-4,6-4 |
| ITF - Anseong M25 | 2023/06/19 02:15 | Ko Suzuki v Min Seong Kim | 6-1,6-2 |
| ITF - Anseong M25 | 2023/06/18 01:00 | Ko Suzuki v Ki Bum Kim | 6-2,6-4 |