| ITF - Naiman W25 - WD | 2019/06/25 02:00 | Feng/Kang v Gao/Sun | 6-3,6-2 |
| ITF - Luzhou M25 - MD | 2019/06/01 07:15 | Gao/Sun v Wang/Wu | 6-3,1-6,5-10 |
| ITF - Luzhou M25 - MD | 2019/05/31 05:25 | Gao/Sun v Ho/Okamura | 7-5,6-3 |
| ITF - Luzhou M25 - MD | 2019/05/30 08:40 | Gao/Sun v Mo/Zou | 6-0,6-1 |
| ITF - Luzhou M25 - MD | 2019/05/28 06:45 | Gao/Sun v Tan/Yu | 6-2,6-2 |
| Challenger Zhangjiagang - MD | 2019/03/20 11:10 | Hsieh/Rungkat v Gao/Sun | 2-6,7-6,11-9 |
| Challenger Shenzhen 2 MD | 2018/10/29 07:20 | Oliveira/Sabanov v Gao/Sun | 6-2,6-4 |
| Challenger Liuzhou MD | 2018/10/24 03:00 | Nedovyesov/Ramanathan v Gao/Sun | 6-7,6-4,10-4 |