Stadium: C Round: 26 Ground: Hardcourt outdoor
| Challenger Yokohama Qual | 2018/02/24 01:00 | Kento Takeuchi v Jumpei Yamasaki | 3-6,3-6 |
| Challenger Yokohama | 2018/02/27 04:45 | Jumpei Yamasaki v Stephane Robert | 6-3,1-6,3-6 |
| Challenger Yokohama Qual | 2018/02/26 01:00 | Jumpei Yamasaki v Masamichi Imamura | 4-6,7-6,6-4 |
| Challenger Yokohama Qual | 2018/02/25 01:00 | Maverick Banes v Jumpei Yamasaki | 6-2,1-6,4-6 |
| Challenger Yokohama Qual | 2018/02/24 01:00 | Kento Takeuchi v Jumpei Yamasaki | 3-6,3-6 |
| ITF Egypt F3 | 2018/01/31 16:40 | Jumpei Yamasaki v Riccardo Bonadio | 2-6,6-7 |
| ITF Egypt F3 | 2018/01/29 08:00 | Jumpei Yamasaki v Louis Lechevretel | 6-3,6-4 |
| ITF Egypt F3 | 2018/01/28 08:00 | Jumpei Yamasaki v Ren Nakamura | 6-1,7-5 |
| ITF Egypt F2 | 2018/01/20 08:00 | Louis Lechevretel v Jumpei Yamasaki | 4-6,7-6,6-4 |
| Challenger Yokohama Qual | 2018/02/24 01:00 | Kento Takeuchi v Jumpei Yamasaki | 3-6,3-6 |
| Challenger Kyoto Qual | 2018/02/17 02:25 | Shinta Fujii v Kento Takeuchi | 0-6,7-6,6-4 |
| Challenger Bangkok | 2018/01/08 04:55 | Marsel Ilhan v Kento Takeuchi | 6-1,6-2 |
| Challenger Bangkok Qual | 2017/12/30 06:05 | Kento Takeuchi v Gerard Granollers-Pujol | 2-6,3-6 |
| ITF Indonesia F8 | 2017/12/01 06:30 | Kento Takeuchi v Prajnesh Gunneswaran | 2-6,4-6 |
| ITF Indonesia F8 | 2017/11/28 03:30 | Kento Takeuchi v Shinta Fujii | 7-6,6-3 |
| ITF Indonesia F7 | 2017/11/23 04:00 | Alexei Popyrin v Kento Takeuchi | 6-1,6-2 |
| ITF Indonesia F7 | 2017/11/21 05:00 | Francesco Vilardo v Kento Takeuchi | 2-6,1-6 |