| ITF M15 Karuizawa | 05/27 04:00 | 45 | Sota Fujii v Keigo Shimizu | 6-3,6-2 | |
| ITF M15 Kofu | 03/18 06:30 | 45 | Keigo Shimizu v Seita Watanabe | 1-6,1-6 | |
| ITF M15 Kofu | 03/18 03:00 | 45 | Quentin Folliot v Keigo Shimizu | 2-6,1-6 | |
| ITF M15 Nishi-Tama | 03/05 03:30 | 25 | Hiroyasu Ehara v Keigo Shimizu | 6-1,6-0 | |
| ITF Japan F1 | 03/03 03:00 | 62 | Naru Shirafuji v Keigo Shimizu | 6-2,6-1 | |
| ITF Japan F6 Qual | 05/27 01:00 | 54 | Yuki Matsuo v Keigo Shimizu | 7-6,5-7,6-1 | |
| ITF Japan F3 | 03/18 06:00 | 62 | Collin Johns v Keigo Shimizu | 6-4,6-1 | |
| ITF Japan F1 | 03/05 01:00 | 62 | Yuki Mochizuki v Keigo Shimizu | 6-2,6-1 |