Wawrinka was the 2015 French Open champion, and was the runner-up in 2017.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
St. Petersburg Open
|
1/16 | Matteo Berrettini |
6-7
6-2 3-6 |
| 2018 |
Winston-Salem Open
|
1/16 | Hyeon Chung |
7-6
6-2 |
| 2018 |
Winston-Salem Open
|
1/32 | Guillermo Garcia-Lopez |
6-7
4-6 |
| year | Event | RND | Winner | Results |
|---|
