| ITF Women Shenzhen | 2017/11/07 04:00 | Lin Zhu v Siqi Cao | 6-2,6-0 |
| ITF Women Liuzhou | 2017/10/24 03:50 | Dalila Jakupovic v Siqi Cao | 6-3,6-0 |
| ITF Women Hua Hin Qual | 2017/09/24 14:05 | Andrea Ka v Siqi Cao | 7-6,6-1 |
| ITF Women Hua Hin Qual | 2017/09/23 05:50 | Siqi Cao v Thitirat Kanaphuet | 6-4,6-2 |
| ITF Women Hua Hin | 2017/09/19 03:00 | Tamaryn Hendler v Siqi Cao | 6-0,6-2 |
| ITF Women Hua Hin Qual | 2017/09/18 04:30 | Chin-Wei Chan v Siqi Cao | 0-6,5-7 |
| ITF Women Hua Hin Qual | 2017/09/17 05:55 | Xue Zhang v Siqi Cao | 5-7,0-6 |
| ITF Women Hua Hin | 2017/09/11 04:50 | Chin-Wei Chan v Siqi Cao | 6-0,6-3 |
| ITF Women Orlando Qual | 2018/01/14 15:00 | Mari Osaka v Caitlin Whoriskey | 3-6,6-7 |
| ITF Women Daytona Beach | 2018/01/12 15:00 | Mari Osaka v Grace Min | 6-7,4-6 |
| ITF Women Daytona Beach | 2018/01/11 16:30 | Elena-Gabriela Ruse v Mari Osaka | 6-7,3-6 |
| ITF Women Daytona Beach | 2018/01/11 01:05 | Mari Osaka v Kyoka Okamura | 6-1,6-1 |
| WTA Honolulu Qual | 2017/11/19 22:45 | Mari Osaka v Haruka Kaji | 3-6,5-7 |
| WTA Limoges Qual | 2017/11/05 12:00 | Mari Osaka v Olga Saez Larra | 6-1,3-6,6-7 |
| WTA Limoges Qual | 2017/11/04 13:35 | Silvia Soler-Espinosa v Mari Osaka | 3-6,7-6,4-6 |
| ITF Women Nantes | 2017/11/01 15:10 | Kaia Kanepi v Mari Osaka | 2-6,7-6,6-0 |