Stadium: Court 3 Round: 44
| ITF Japan F7 | 2017/06/06 01:00 | Arata Onozawa v Masaki Sasai | 6-3,2-6,3-6 |
| ITF Japan F2 | 2015/03/17 04:10 | Masaki Sasai v Arata Onozawa | 6-4,6-4 |
| ITF Thailand F5 Qual | 2017/08/06 06:40 | David Agung Susanto v Masaki Sasai | 3-6,6-7 |
| ITF Thailand F5 Qual | 2017/08/05 06:40 | Masaki Sasai v Michael Look | 6-4,7-6 |
| ITF Thailand F4 | 2017/08/01 04:00 | Masaki Sasai v Jeremy Beale | 6-7,2-6 |
| ITF Thailand F4 Qual | 2017/07/31 02:30 | Pruchya Isarow v Masaki Sasai | 3-6,6-7 |
| ITF Thailand F4 Qual | 2017/07/30 06:25 | Skyler Butts v Masaki Sasai | 4-6,6-2,4-6 |
| ITF Guam F1 | 2017/06/20 07:15 | Luca Castelnuovo v Masaki Sasai | 6-4,4-6,6-3 |
| ITF Japan F8 | 2017/06/15 01:00 | Yuta Shimizu v Masaki Sasai | 6-1,1-6,7-6 |
| ITF Japan F8 | 2017/06/13 01:30 | Rio Noguchi v Masaki Sasai | 1-6,6-4,4-6 |
| ITF Thailand F4 | 2017/08/01 05:40 | Cheng-Yu Yu v Arata Onozawa | 7-5,6-7,6-2 |
| ITF Thailand F4 Qual | 2017/07/31 05:10 | Arata Onozawa v Ken Onoda | 6-3,6-3 |
| ITF Thailand F4 Qual | 2017/07/30 12:30 | Arata Onozawa v Thien Nguyen Hoang | 7-5,4-6,6-1 |
| ITF Hong Kong F1 | 2017/06/20 09:35 | Karunuday Singh v Arata Onozawa | 6-4,1-6,6-1 |
| ITF Japan F8 | 2017/06/15 03:05 | Arata Onozawa v Koichi Sano | 6-2,1-6,0-6 |
| ITF Japan F8 | 2017/06/14 03:00 | Johan Nikles v Arata Onozawa | 1-6,0-6 |
| ITF Japan F7 | 2017/06/06 01:00 | Arata Onozawa v Masaki Sasai | 6-3,2-6,3-6 |
| ITF Japan F6 | 2017/05/30 03:30 | Yuto Sakai v Arata Onozawa | 7-6,7-5 |