Williams became the first in history to own a career Golden Slam in singles and doubles.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2006 |
Bell Challenge
Canada, Quebec, Quebec City |
Championship | Olga Puchkova |
6-2
4-6 1-3 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2014 |
Monterrey Open
|
1/16 | Monica Puig |
0-6
3-6 |
| 2014 |
Pattaya Open, Qualification
|
1/8 | Olga Savchuk |
6-4
4-6 5-7 |
| 2014 |
Australian Open, Qualification WTA
|
1/48 (Special Qual) | Alexandra Dulgheru |
6-3
3-6 6-0 |
| 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 |
