Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF Indonesia F2 | 2017/02/15 06:25 | Sho Katayama v Soichiro Moritani | 6-2,6-3 |
| ITF Japan F2 | 2018/03/13 03:00 | Kaichi Uchida v Sho Katayama | 7-6,6-3 |
| ITF Japan F1 | 2018/03/08 01:30 | Sho Katayama v Yuta Shimizu | 4-6,1-6 |
| ITF Japan F1 | 2018/03/06 02:00 | Shintaro Imai v Sho Katayama | 2-6,5-7 |
| Challenger Yokohama Qual | 2018/02/25 02:20 | Hiroki Moriya v Sho Katayama | 6-3,6-0 |
| Challenger Yokohama Qual | 2018/02/24 06:45 | Michal Przysiezny v Sho Katayama | 4-6,6-2,2-6 |
| Challenger Kyoto Qual | 2018/02/17 05:40 | Luke Saville v Sho Katayama | 6-3,6-3 |
| ITF Vietnam F3 | 2017/11/22 03:00 | Sho Katayama v Daniiar Duldaev | 3-6,1-6 |
| ITF Vietnam F3 | 2017/11/21 06:10 | Sho Katayama v Keisuke Numajiri | 6-4,6-4 |
| ITF Japan F3 | 2018/03/18 01:00 | Soichiro Moritani v Takashi Saito | 6-3,3-6,0-6 |
| ITF Japan F3 | 2018/03/17 04:00 | Soichiro Moritani v Kazuki Shimizu | 6-2,6-3 |
| ITF Japan F2 | 2018/03/16 01:00 | Soichiro Moritani v Shintaro Imai | 2-6,5-7 |
| ITF Japan F2 | 2018/03/14 02:40 | Kento Takeuchi v Soichiro Moritani | 4-6,0-6 |
| ITF Japan F2 | 2018/03/13 00:30 | Yuki Takamura v Soichiro Moritani | 6-4,1-6,3-6 |
| ITF Japan F2 | 2018/03/12 00:30 | Soichiro Moritani v Masaki Osafune | 7-6,6-0 |
| ITF Japan F1 | 2018/03/09 02:00 | Takuto Niki v Soichiro Moritani | 6-1,6-4 |
| ITF Japan F1 | 2018/03/08 05:35 | Shinji Hazawa v Soichiro Moritani | 6-7,2-6 |