The Swiss was playing his first tournament on clay since Roland Garros in 2019.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2021 |
Madrid Open, Qualification
|
1/12 (Special Qual) | Kateryna Kozlova |
6-4
6-4 |
| 2021 |
Madrid Open, Qualification
|
1/24 (Special Qual) | Zarina Diyas |
2-6
4-6 |
| 2021 |
Istanbul Open
|
1/16 | Kaia Kanepi |
4-6
4-6 |
| 2021 |
Volvo Car Open
|
1/16 | Yulia Putintseva |
2-6
2-6 |
| 2021 |
Volvo Car Open
|
1/32 | Zarina Diyas |
3-6
1-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2021 |
Geneva Open
|
1/8 | Pablo Andujar |
4-6
6-4 4-6 |
| 2021 |
Geneva Open
|
1/16 | Pablo Andujar |
0-6
4-6 |
| 2021 |
Madrid Open
|
1/32 | Marcos Giron |
7-6
6-7 5-7 |
| 2021 |
Madrid Open, Qualification
|
1/7 (Special Qual) | Pablo Andujar |
7-6
5-7 3-6 |
| 2021 |
Madrid Open, Qualification
|
1/14 (Special Qual) | Pablo Andujar |
3-6
4-6 |
