Williams became the first in history to own a career Golden Slam in singles and doubles.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2010 |
Western & Southern Financial Group Women
|
Championship | Akgul Amanmuradova |
6-7
4-6 |
| 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 |
|---|---|---|---|---|
| 2021 |
Dubai Duty Free Tennis Championships, Qualification
|
1/16 | Vera Zvonareva |
1-6
1-6 |
| 2021 |
Qatar Total Open, Qualification
|
1/16 | Yaroslava Shvedova |
6-3
6-0 |
