Wawrinka was the 2015 French Open champion, and was the runner-up in 2017.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2016 |
Sofia Open
|
1/8 | Guillermo Garcia-Lopez |
6-3
6-4 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
St. Petersburg Open
|
1/16 | Mikhail Youzhny |
6-7
4-6 |
| 2018 |
Davis Cup Playoff
|
Championship | Yoshihito Nishioka |
6-4
6-3 6-3 |
| 2018 |
US Open ATP
|
1/64 | Dominic Thiem |
6-3
6-1 6-4 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Shenzhen Open
|
1/16 | Viktor Troicki |
3-5
|
| 2018 |
St. Petersburg Open
|
1/16 | Matteo Berrettini |
6-7
6-2 3-6 |
