Round: 25 Ground: Hardcourt outdoor
| ITF Japan F1 | 2017/03/07 02:40 | Jumpei Yamasaki v Gengo Kikuchi | 4-6,2-6 |
| Challenger Yokohama Qual | 2017/02/27 01:00 | Blake Mott v Jumpei Yamasaki | 6-0,6-1 |
| Challenger Yokohama Qual | 2017/02/26 02:20 | Kaito Itsusaki v Jumpei Yamasaki | 3-6,3-6 |
| Challenger Yokohama Qual | 2017/02/25 03:15 | Jumpei Yamasaki v Roberto Quiroz | 6-3,3-6,7-5 |
| Challenger Kyoto | 2017/02/21 07:50 | Soonwoo Kwon v Jumpei Yamasaki | 6-1,6-1 |
| ITF Spain F4 | 2017/02/07 08:30 | Jumpei Yamasaki v Alberto Romero De Avila Senise | 6-3,3-6,3-6 |
| ITF Spain F3 | 2017/01/31 09:00 | David Jorda Sanchis v Jumpei Yamasaki | 3-6,7-6,6-1 |
| ITF Hong Kong F1 | 2017/01/05 02:00 | Geoffrey Blancaneaux v Jumpei Yamasaki | 6-4,6-4 |
| ITF Japan F2 | 2017/03/13 01:00 | Jeamoon Lee v Takao Suzuki | 6-4,6-0 |
| ITF Thailand F6 | 2016/12/27 04:40 | Fabien Reboul v Jeamoon Lee | 6-3,6-4 |
| ITF Thailand F6 | 2016/12/24 07:30 | Jeamoon Lee v Aleksandr Malyshev | 6-1,6-0 |
| ITF Thailand F5 | 2016/12/23 03:00 | Jeamoon Lee v Soonwoo Kwon | 3-6,4-6 |
| ITF Thailand F5 | 2016/12/19 03:00 | Temur Ismailov v Jeamoon Lee | 2-6,6-3,2-6 |
| ITF Thailand F5 | 2016/12/18 04:00 | Pirmin Haenle v Jeamoon Lee | 3-6,6-7 |
| ITF Thailand F5 | 2016/12/17 07:30 | Oleg Kurbatov v Jeamoon Lee | 5-7,0-6 |
| ITF Thailand F4 | 2016/12/14 03:00 | Sadio Doumbia v Jeamoon Lee | 7-6,1-6,7-5 |