Stadium: I Round: 27 Ground: Clay
| ITF Japan F3 | 2018/03/22 08:45 | Sho Katayama v Kaito Uesugi | 3-6,1-6 |
| ITF Japan F4 | 2014/04/02 03:20 | Sho Katayama v Kaito Uesugi | 6-2,5-7,4-6 |
| ITF Japan F6 | 2018/04/11 01:00 | Sho Katayama v Zhe Li | 1-6,6-3,4-6 |
| ITF Japan F5 | 2018/04/03 04:10 | Sho Katayama v Renta Tokuda | 2-6,4-6 |
| ITF Japan F4 | 2018/03/30 03:30 | Sho Katayama v Yosuke Watanuki | 4-6,4-6 |
| ITF Japan F4 | 2018/03/29 03:45 | Sho Katayama v Tamaki Yamao | 6-4,6-4 |
| ITF Japan F4 | 2018/03/27 03:00 | Kento Takeuchi v Sho Katayama | 6-4,4-6,5-7 |
| ITF Japan F3 | 2018/03/22 08:45 | Sho Katayama v Kaito Uesugi | 3-6,1-6 |
| ITF Japan F3 | 2018/03/22 04:05 | Shuichi Sekiguchi v Sho Katayama | 5-7,6-4,2-6 |
| ITF Japan F3 | 2018/03/19 01:00 | Sho Katayama v Soichiro Moritani | 6-2,6-0 |
| ITF Japan F6 | 2018/04/10 05:10 | Kaito Uesugi v Sora Fukuda | 5-7,5-7 |
| ITF Japan F6 Qual | 2018/04/09 01:00 | Kaito Uesugi v Takuya Kumasaka | 6-3,6-1 |
| ITF Japan F6 Qual | 2018/04/08 01:00 | Kaito Uesugi v Ko Suzuki | 7-6,6-4 |
| ITF Japan F3 | 2018/03/23 02:00 | Kaito Uesugi v Makoto Ochi | 4-6,6-4,3-6 |
| ITF Japan F3 | 2018/03/22 08:45 | Sho Katayama v Kaito Uesugi | 3-6,1-6 |
| ITF Japan F3 | 2018/03/22 05:25 | Kaito Uesugi v Shintaro Imai | 6-3,2-6,6-1 |
| ITF Japan F3 | 2018/03/19 02:40 | Tae-Woo Lee v Kaito Uesugi | 3-6,3-6 |
| ITF Japan F2 | 2018/03/16 01:00 | Daniel Nguyen v Kaito Uesugi | 6-2,2-6,7-6 |