Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| Challenger Kyoto Qual | 2018/02/18 01:00 | Ryota Tanuma v Shinta Fujii | 3-6,5-7 |
| ITF Japan F2 | 2018/03/13 00:30 | Shinta Fujii v Rio Noguchi | 4-6,2-6 |
| ITF Japan F2 | 2018/03/12 00:30 | Yuichi Ito v Shinta Fujii | 1-6,6-3,4-6 |
| ITF Japan F2 | 2018/03/11 00:30 | Kousuke Ogura v Shinta Fujii | 6-2,5-7,6-7 |
| ITF Japan F1 | 2018/03/03 04:30 | Shinta Fujii v Sota Fujii | 4-6,4-6 |
| Challenger Kyoto Qual | 2018/02/19 01:30 | Zhe Li v Shinta Fujii | 6-4,6-3 |
| Challenger Kyoto Qual | 2018/02/18 01:00 | Ryota Tanuma v Shinta Fujii | 3-6,5-7 |
| Challenger Kyoto Qual | 2018/02/17 02:25 | Shinta Fujii v Kento Takeuchi | 0-6,7-6,6-4 |
| Challenger Launceston Qual | 2018/02/03 04:20 | Ken Onishi v Shinta Fujii | 6-0,4-6,6-3 |
| ITF Japan F2 | 2018/03/12 02:30 | Yuya Kibi v Ryota Tanuma | 6-2,2-6,7-5 |
| Challenger Yokohama Qual | 2018/02/24 02:45 | Zhe Li v Ryota Tanuma | 5-7,6-1,6-2 |
| Challenger Kyoto Qual | 2018/02/18 01:00 | Ryota Tanuma v Shinta Fujii | 3-6,5-7 |
| Challenger Kyoto Qual | 2018/02/17 01:00 | Ryota Tanuma v Kazuma Kawachi | 6-3,6-0 |
| ITF China F3 | 2018/01/24 03:00 | Ryota Tanuma v Ivan Nedelko | 3-6,5-7 |
| ITF China F3 | 2018/01/22 05:55 | Tyler Lu v Ryota Tanuma | 3-6,3-6 |
| ITF China F2 | 2018/01/17 05:10 | Yan Bai v Ryota Tanuma | 1-6,7-5,6-2 |
| ITF China F2 | 2018/01/16 02:00 | Ryota Tanuma v Shao-Fan Liu | 6-2,6-1 |