Stadium: Court 3 Round: 44
| ITF Japan F7 | 2017/06/06 01:00 | Onozawa, Arata v Sasai, Masaki | 6-3,2-6,3-6 |
| ITF Japan F2 | 2015/03/17 04:10 | Sasai, Masaki v Onozawa, Arata | 6-4,6-4 |
| ITF Thailand F5 Qual | 2017/08/06 06:40 | 수산토, 다비드 아궁 v Sasai, Masaki | 3-6,6-7 |
| ITF Thailand F5 Qual | 2017/08/05 06:40 | Sasai, Masaki v Look, Michael | 6-4,7-6 |
| ITF Thailand F4 | 2017/08/01 04:00 | Sasai, Masaki v Beale, Jeremy | 6-7,2-6 |
| ITF Thailand F4 Qual | 2017/07/31 02:30 | Isaro, Pruchya v Sasai, Masaki | 3-6,6-7 |
| ITF Thailand F4 Qual | 2017/07/30 06:25 | 부츠, 스카일러 v Sasai, Masaki | 4-6,6-2,4-6 |
| ITF Guam F1 | 2017/06/20 07:15 | 카스텔누오보, 루카 v Sasai, Masaki | 6-4,4-6,6-3 |
| ITF Japan F8 | 2017/06/15 01:00 | 시미즈, 유타 v Sasai, Masaki | 6-1,1-6,7-6 |
| ITF Japan F8 | 2017/06/13 01:30 | 노구치, 리오 v Sasai, Masaki | 1-6,6-4,4-6 |
| ITF Thailand F4 | 2017/08/01 05:40 | 위, 청위 v Onozawa, Arata | 7-5,6-7,6-2 |
| ITF Thailand F4 Qual | 2017/07/31 05:10 | Onozawa, Arata v 오노다, 켄 | 6-3,6-3 |
| ITF Thailand F4 Qual | 2017/07/30 12:30 | Onozawa, Arata v Nguyen Hoang, Thien | 7-5,4-6,6-1 |
| ITF Hong Kong F1 | 2017/06/20 09:35 | 싱, 카루누데이 v Onozawa, Arata | 6-4,1-6,6-1 |
| ITF Japan F8 | 2017/06/15 03:05 | Onozawa, Arata v Sano, Koichi | 6-2,1-6,0-6 |
| ITF Japan F8 | 2017/06/14 03:00 | 니클레스, 조한 v Onozawa, Arata | 1-6,0-6 |
| ITF Japan F7 | 2017/06/06 01:00 | Onozawa, Arata v Sasai, Masaki | 6-3,2-6,3-6 |
| ITF Japan F6 | 2017/05/30 03:30 | Sakai, Yuto v Onozawa, Arata | 7-6,7-5 |