Stadium: Court 4 Round: 25 Ground: Clay
| ITF M15 Karuizawa | 2023/05/30 03:00 | Ko Suzuki v Yusuke Kusuhara | 7-6,4-6,10-8 |
| 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 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 M15 Karuizawa | 2023/05/30 02:00 | Yamato Sueoka v Winter Meagher | 6-4,3-6,11-9 |
| ITF M15 Karuizawa | 2023/05/28 01:15 | Yamato Sueoka v Jayden Court | 6-1,6-3 |
| ITF M15 Monastir | 2023/05/10 12:40 | Yamato Sueoka v Omar Brigida | 5-7,3-6 |
| ITF M15 Monastir | 2023/05/09 12:30 | Yamato Sueoka v Hillel Rousseau | 6-4,6-1 |
| ITF M15 Monastir | 2023/05/09 09:00 | Yamato Sueoka v Andre Filep | 6-1,6-2 |
| ITF M15 Monastir | 2023/05/03 08:30 | Yamato Sueoka v Ryuki Matsuda | 4-6,4-6 |
| ITF M15 Monastir | 2023/05/01 12:30 | Yamato Sueoka v Winter Meagher | 6-1,6-3 |
| ITF M15 Monastir | 2023/05/01 08:30 | Yamato Sueoka v Rishabdev Raman | 6-2,6-0 |