The 2018 champion lost to the American in the quarterfinals of her title defense in 2019.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2020 |
Roland Garros WTA
|
1/16 | Barbora Krejcikova |
5-7
6-4 6-3 |
| 2020 |
Roland Garros WTA
|
1/32 | Tsvetana Pironkova | |
| 2020 |
Roland Garros WTA
|
1/64 | Tsvetana Pironkova |
6-3
6-3 |
| 2020 |
US Open WTA
|
Quarter Finals | Serena Williams |
6-4
3-6 2-6 |
| 2020 |
US Open WTA
|
1/8 | Tsvetana Pironkova |
4-6
7-6 3-6 |
| 2020 |
US Open WTA
|
1/16 | Tsvetana Pironkova |
4-6
1-6 |
| 2020 |
US Open WTA
|
1/32 | Tsvetana Pironkova |
7-5
6-3 |
| 2020 |
US Open WTA
|
1/64 | Tsvetana Pironkova |
6-2
6-3 |
| 2017 |
Wimbledon WTA
|
1/32 | Caroline Wozniacki |
3-6
4-6 |
| 2017 |
Wimbledon WTA
|
1/64 | Tsvetana Pironkova |
6-1
6-4 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2020 |
J&T Banka Ostrava Open, Qualification
|
1/6 (Special Qual) | Coco Gauff |
6-4
6-4 |
| 2020 |
Roland Garros WTA
|
1/32 | Simona Halep |
6-3
6-4 |
| 2020 |
Roland Garros WTA
|
1/64 | Irina-Camelia Begu |
6-4
4-6 6-3 |
| 2020 |
Internazionali BNL d'Italia
|
1/16 | Johanna Konta |
0-6
4-6 |
| 2020 |
Internazionali BNL d'Italia
|
1/32 | Irina-Camelia Begu |
2-6
2-6 |
