Williams became the first in history to own a career Golden Slam in singles and doubles.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2010 |
Kremlin Cup
Russia, Moscow |
Championship | Zarina Diyas |
1-6
2-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2017 |
US Open WTA
|
1/64 | Petra Kvitova |
7-5
7-5 |
| 2017 |
Citi Open
|
1/16 | Oceane Dodin |
6-4
3-6 0-2 |
| 2017 |
NanChang Open
|
1/8 | Jing-Jing Lu |
2-6
6-1 6-2 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2020 |
Internazionali BNL d'Italia, Qualification
|
1/16 | Anna Kalinskaya |
5-7
6-2 3-6 |
| 2020 |
Istanbul Open
|
1/16 | Aliaksandra Sasnovich |
6-3
5-7 1-6 |
| 2020 |
US Open WTA
|
1/64 | Bernarda Pera |
7-6
6-0 |
