Round: 26 Ground: Hardcourt outdoor
| ITF Japan F3 | 2017/03/22 02:10 | Gao, Xin v Tung-Lin Wu | 7-5,1-6,7-5 |
| ITF Japan F2 | 2017/03/15 02:00 | Yuta Shimizu v Gao, Xin | 6-7,5-7 |
| ITF Japan F2 | 2017/03/14 02:30 | Masaya Kobayashi v Gao, Xin | 4-6,2-6 |
| ITF Japan F1 | 2017/03/07 01:00 | Katayama, Sho v Gao, Xin | 6-2,6-4 |
| Yokohama, Japan, Qualifying | 2017/02/25 01:00 | Gao, Xin v Hatakeyama, Nasa | 4-6,6-7 |
| Suzhou, China | 2016/10/27 06:30 | Gao, Xin v Kudryavtsev, Alexander | 4-6,2-6 |
| Suzhou, China | 2016/10/25 05:10 | Gao, Xin v Ning, Yuqing | 6-1,6-4 |
| Ningbo, China, Qualifying | 2016/10/15 06:20 | Qi, Xi v Gao, Xin | 7-6,7-6 |
| ITF Japan F3 | 2017/03/22 03:35 | Johns, Collin v Watanuki, Yusuke | 3-6,1-6 |
| Yokohama, Japan, Qualifying | 2017/02/25 04:25 | Watanuki, Yusuke v Evgeny Karlovskiy | 3-6,6-7 |
| Challenger Kyoto Qual | 2017/02/19 02:10 | Watanuki, Yusuke v Gunneswaran, Prajnesh | 2-6,4-6 |
| Challenger Kyoto Qual | 2017/02/18 01:00 | Watanuki, Yusuke v Renta Tokuda | 6-4,4-6,6-1 |
| Launceston, Australia | 2017/02/05 02:10 | Mousley, Bradley v Watanuki, Yusuke | 6-3,6-2 |
| Launceston, Australia | 2017/02/04 03:15 | Casey, Oliver v Watanuki, Yusuke | 5-7,4-6 |
| Challenger - Burnie - Qualifications | 2017/01/28 01:45 | Margaroli, Luca v Watanuki, Yusuke | 7-6,6-2 |
| Challenger Canberra | 2017/01/09 00:55 | Watanuki, Yusuke v Denis Shapovalov | 7-6,4-6,4-6 |