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