Round: 29
| Challenger Vancouver Qual | 2017/08/13 18:00 | Frederik Nielsen v Takanyi Garanganga | 4-6,7-5,3-6 |
| Challenger Vancouver Qual | 2017/08/12 19:05 | Austin Krajicek v Frederik Nielsen | 2-6,3-6 |
| Challenger Aptos | 2017/08/08 18:00 | Frederik Nielsen v Tennys Sandgren | 2-6,4-6 |
| Challenger Aptos Qual | 2017/08/06 18:35 | Frederik Nielsen v Bradley Mousley | 6-0,4-6,6-3 |
| Challenger Aptos Qual | 2017/08/05 23:00 | Marc Polmans v Frederik Nielsen | 6-3,1-6,4-6 |
| Challenger Recanati | 2017/07/05 19:00 | Luca Vanni v Frederik Nielsen | 6-2,2-6,6-2 |
| Challenger Recanati | 2017/07/03 13:30 | Frederik Nielsen v Agustin Velotti | 4-6,7-6,6-3 |
| Challenger Recanati Qual | 2017/07/02 12:00 | Lorenzo Frigerio v Frederik Nielsen | 4-6,4-6 |
| ITF Thailand F6 | 2017/08/15 07:45 | Renta Tokuda v Lorenzo Frigerio | 2-6,6-7 |
| ITF Thailand F5 | 2017/08/07 06:45 | Wishaya Trongcharoenchaikul v Renta Tokuda | 6-3,7-6 |
| Challenger Granby Qual | 2017/07/23 19:40 | Liam Broady v Renta Tokuda | 6-2,6-4 |
| Challenger Granby Qual | 2017/07/22 20:20 | Antoine Leduc v Renta Tokuda | 3-6,1-6 |
| Challenger Winnipeg Qual | 2017/07/09 17:25 | Renta Tokuda v Joshua Peck | 5-7,5-7 |
| ITF Japan F7 | 2017/06/07 01:00 | Renta Tokuda v Sho Shimabukuro | 5-7,4-6 |
| ITF Japan F7 | 2017/06/06 04:05 | Renta Tokuda v Masaki Osafune | 6-1,3-6,6-1 |
| ITF Japan F6 | 2017/06/03 02:30 | Yusuke Takahashi v Renta Tokuda | 6-4,6-3 |