Twenty-one of 25 former champions were, had been, or would be ranked in the Top 20.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2013 |
Australian Open WTA
Australia, Victoria, Melbourne |
1/32 | Roberta Vinci |
3-6
2-6 |
| 2010 |
China Open, Qualification
|
Championship | Roberta Vinci |
6-3
6-3 |
| 2010 |
Mutua Madrilena Madrid Open, Qualification
|
Championship | Akgul Amanmuradova |
6-7
3-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2020 |
Fed Cup Group 1 - Asia/Oceania
|
Championship | Su- Jeong Jang |
6-3
6-4 |
| 2020 |
Thailand Open, Qualification
|
1/12 (Special Qual) | Akgul Amanmuradova |
1-6
6-3 6-2 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Internazionali BNL d'Italia
|
1/32 | Aleksandra Krunic |
2-6
6-0 6-3 |
| 2018 |
Swiss Women's Championship, Qualification
|
1/12 (Special Qual) | Kathinka Von Deichmann |
6-1
6-3 |
| 2018 |
Miami Open, Qualification
|
1/12 (Special Qual) | Viktorija Golubic |
4-6
3-6 |
| 2018 |
Miami Open, Qualification
|
1/24 (Special Qual) | Roberta Vinci |
7-5
1-6 2-6 |
