Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Kashiwa | 2022/09/29 00:55 | Rimpei Kawakami v Hiroyasu Ehara | 6-2,6-4 |
| ITF M25 Tsukuba | 2023/03/30 02:45 | Rimpei Kawakami v Tatsuma Ito | 6-1,1-6,0-6 |
| ITF M25 Tsukuba | 2023/03/29 02:30 | Rimpei Kawakami v Sora Fukuda | 3-6,6-4,6-4 |
| Challenger Las Franquesas del Valles | 2023/03/21 12:30 | Rimpei Kawakami v Nicholas David Ionel | 6-2,3-6,3-6 |
| Challenger Las Franquesas del Valles | 2023/03/20 13:30 | Fajing Sun v Rimpei Kawakami | 6-2,6-7,5-7 |
| Challenger Las Franquesas del Valles | 2023/03/20 09:00 | Jordi Garcia Mestre v Rimpei Kawakami | 1-6,1-6 |
| Challenger Szekesfehervar | 2023/03/12 10:35 | Michael Vrbensky v Rimpei Kawakami | 6-3,6-1 |
| ITF M15 Antalya | 2023/03/08 11:30 | Marcel Zielinski v Rimpei Kawakami | 6-3,1-6,6-4 |
| ITF M15 Antalya | 2023/03/07 07:00 | Rimpei Kawakami v Matthias Ujvary | 6-2,6-4 |
| ITF M25 Kashiwa | 2023/04/03 02:30 | Hiroyasu Ehara v Naoki Tajima | 6-4,6-2 |
| ITF M25 Kashiwa | 2023/04/02 04:00 | Yuichiro Inui v Hiroyasu Ehara | 4-6,2-6 |
| ITF M15 Antalya | 2023/03/14 11:20 | Gabriele Pennaforti v Hiroyasu Ehara | 6-0,6-2 |
| ITF M15 Antalya | 2023/03/13 16:10 | Jiri Jenicek v Hiroyasu Ehara | 2-6,1-6 |
| ITF M15 Antalya | 2023/03/12 10:30 | Filippo Verdese v Hiroyasu Ehara | 1-6,1-6 |
| ITF M15 Antalya | 2023/03/01 07:00 | Hiroyasu Ehara v Dominik Kellovsky | 3-6,2-6 |
| ITF M15 Antalya | 2023/02/28 07:00 | Igor Gimenez v Hiroyasu Ehara | 6-7,3-6 |
| ITF M15 Antalya | 2023/02/27 08:25 | Egor Khotchenkov v Hiroyasu Ehara | 2-6,4-6 |