Round: 44 Ground: Hardcourt indoor
| ITF Estonia F1 | 2017/07/23 07:00 | Keisuke Numajiri v Alex Hedman | 6-3,6-2 |
| 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 Estonia F1 | 2017/07/23 07:00 | Pelle Boerma v Verneri Tuomi | 3-6,6-0,6-4 |
| ITF Lithuania F1 | 2017/07/16 08:00 | Pelle Boerma v Mikus Losbergs | 3-6,1-6 |
| ITF Lithuania F1 | 2017/07/15 10:00 | Simonas Zukauskas v Pelle Boerma | 1-6,1-6 |
| ITF Germany F4 | 2017/06/18 08:00 | Pelle Boerma v Tim Ruehl | 3-6,5-7 |
| ITF Egypt F15 | 2017/04/26 09:10 | Alexander Merino v Pelle Boerma | 6-3,6-2 |
| ITF Egypt F14 | 2017/04/16 12:00 | Iouri Sant S-Netrebin v Pelle Boerma | 6-2,6-1 |
| ITF Egypt F14 | 2017/04/15 08:00 | Edoardo Sardella v Pelle Boerma | 3-6,4-6 |
| ITF Egypt F13 | 2017/04/08 09:00 | Pelle Boerma v Vladyslav Orlov | 3-6,4-6 |