Stadium: Sub-Court B Round: 54 Ground: Hardcourt outdoor
| ITF M25 Canberra | 2023/03/14 23:00 | Ko Suzuki v Naoki Tajima | 2-6,5-7 |
| ITF M25 Jakarta | 2023/04/25 04:15 | Naoki Tajima v Credit Chaiyarin | 7-5,3-6,8-10 |
| ITF M25 Jakarta | 2023/04/24 06:30 | Naoki Tajima v Arsya Philo Wisyesa Putra Sjarifuddin | 6-0,6-0 |
| ITF M25 Jakarta | 2023/04/17 07:00 | Naoki Tajima v Andrew Rogers | 6-7,4-6 |
| ITF M25 Jakarta Qual | 2023/04/16 04:40 | Pruchya Isarow v Naoki Tajima | 6-2,3-6,8-10 |
| ITF M25 Kashiwa | 2023/04/03 02:30 | Hiroyasu Ehara v Naoki Tajima | 6-4,6-2 |
| ITF M25 Tsukuba | 2023/03/30 01:00 | Renta Tokuda v Naoki Tajima | 6-0,6-4 |
| ITF M25 Tsukuba | 2023/03/27 06:00 | Naoki Tajima v Ryotaro Matsumura | 6-3,0-6,10-4 |
| ITF M25 Tsukuba | 2023/03/27 00:30 | Taiyo Yamanaka v Naoki Tajima | 6-4,5-7,8-10 |
| ITF M25 Kashiwa | 2023/04/02 00:30 | Ko Suzuki v Taiyo Yamanaka | 1-6,6-3,11-13 |
| 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 Seonyong 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 |