Round: 44 Ground: Hardcourt indoor
| ITF Lithuania F1 | 2017/07/18 12:45 | Grigelis, Laurynas v Numajiri, Keisuke | 6-1,6-3 |
| ITF Guam F1 | 2017/06/22 01:30 | Numajiri, Keisuke v Moon, Ju-Hae | 3-6,3-6 |
| ITF Guam F1 | 2017/06/19 01:15 | Nordstrom, Per v Numajiri, Keisuke | 1-6,3-6 |
| ITF Japan F7 | 2017/06/03 04:00 | Kato, Shoma v Numajiri, Keisuke | 6-4,6-1 |
| ITF Turkey F19 Qual | 2017/05/14 07:00 | Numajiri, Keisuke v Pavlioutchenkov, Alexander | 5-7,6-2,3-6 |
| ITF Turkey F18 | 2017/05/10 08:05 | Dennis Novak v Numajiri, Keisuke | 6-1,6-0 |
| Turkey F14, Singles Qualifying | 2017/04/10 07:30 | Numajiri, Keisuke v Brtnicky, Filip | 1-6,3-6 |
| Turkey F14, Singles Qualifying | 2017/04/09 07:00 | Numajiri, Keisuke v Sami Ben Abdennibi | 6-2,3-6,6-3 |
| ITF Czech Republic F1 Qual | 2017/05/14 08:00 | Hedman, Alex v Dubrivnyy, Artem | 4-6,2-6 |
| ITF Czech Republic F1 Qual | 2017/05/13 08:00 | Hedman, Alex v Li-Ernoul, Joachim | 5-7,6-3,7-6 |
| ITF Greece F4 | 2017/03/26 06:30 | Hedman, Alex v Grozev, Serafim | 2-6,4-6 |
| ITF Finland F4 | 2016/11/13 23:00 | Hedman, Alex v Mylokostov, Denys | 3-6,6-7 |
| Finlande F4, Qualifications Simples | 2016/11/12 23:00 | Kristjan Tamm v Hedman, Alex | 3-6,2-6 |
| ITF Estonia F4 | 2016/11/05 23:00 | Hedman, Alex v Kapric, Denis | 6-7,5-7 |
| ITF Estonia F3 | 2016/10/30 11:30 | Eero Vasa v Hedman, Alex | 3-6,7-6,6-0 |
| ITF Estonia F3 | 2016/10/29 10:30 | Hedman, Alex v Polyakov, Vladimir | 3-6,6-0,6-2 |