Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Tsukuba | 2023/03/29 04:15 | Hiroki Moriya v Ko Suzuki | 6-3,6-1 |
| ITF M25 Tsukuba | 2023/03/27 05:30 | Ko Suzuki v Shunsuke Nakagawa | 6-2,6-4 |
| ITF M25 Tsukuba | 2023/03/27 00:30 | Yuttana Charoenphon v Ko Suzuki | 2-6,2-6 |
| ITF M25 Canberra | 2023/03/20 22:50 | Ko Suzuki v Seon Yong Han | 6-3,2-6,6-10 |
| ITF M25 Canberra | 2023/03/19 23:00 | Ko Suzuki v Luke Sorensen | 6-1,6-2 |
| ITF M25 Canberra | 2023/03/14 23:00 | Ko Suzuki v Naoki Tajima | 2-6,5-7 |
| ITF M25 Canberra | 2023/03/13 23:00 | Ko Suzuki v Matthew Woerndle | 6-0,6-2 |
| ITF M25 Canberra | 2023/03/12 23:00 | Ko Suzuki v Luke Sorensen | 6-1,6-4 |
| ITF M25 Tsukuba | 2023/03/27 00:30 | Taiyo Yamanaka v Naoki Tajima | 6-4,5-7,8-10 |
| ITF M15 Monastir | 2023/03/09 08:30 | Hady Habib v Taiyo Yamanaka | 6-3,6-3 |
| ITF M15 Monastir | 2023/03/08 08:30 | Tomasz Berkieta v Taiyo Yamanaka | 6-4,3-6,3-6 |
| ITF M15 Monastir | 2023/03/06 13:30 | Taiyo Yamanaka v Aoran Wang | 6-3,6-2 |
| ITF M15 Monastir | 2023/03/06 10:00 | Taiyo Yamanaka v Dimitris Sakellaridis | 6-2,6-7,10-8 |
| ITF M15 Monastir | 2023/03/05 08:30 | Taiyo Yamanaka v Victor Ernaelsteen | 4-6,6-3,10-2 |
| ITF M15 Monastir | 2023/03/02 10:20 | Taiyo Yamanaka v Ryuki Matsuda | 0-6,2-6 |
| ITF M15 Monastir | 2023/03/01 13:00 | Taiyo Yamanaka v Kuan Yu Chen | 6-3,6-4 |