The 38-year-old won the tournament in 2015, but she feels she needs to rest her body.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
St. Petersburg Open
|
Quarter Finals | Roberto Bautista Agut |
6-7
3-6 |
| 2018 |
St. Petersburg Open
|
1/8 | Marco Cecchinato |
7-5
7-6 |
| 2018 |
US Open ATP
|
1/64 | Julien Benneteau |
6-2
6-7 3-6 4-6 |
| 2018 |
Winston-Salem Open
|
1/16 | Jan-Lennard Struff |
3-6
4-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
US Open WTA
|
1/16 | Serena Williams |
6-1
6-2 |
| 2018 |
US Open WTA
|
1/32 | Venus Williams |
4-6
5-7 |
| 2018 |
US Open WTA
|
1/64 | Venus Williams |
3-6
7-5 3-6 |
| 2018 |
Rogers Cup
|
1/8 | Simona Halep |
6-2
6-2 |
| 2018 |
Rogers Cup
|
1/16 | Venus Williams |
6-7
4-6 |
| 2018 |
Rogers Cup
|
1/32 | Venus Williams |
5-7
1-6 |
