The German moved to 50-16 in a season that has brought three titles.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2019 |
Rotterdam Open
|
1/16 | Mikhail Kukushkin |
6-2
7-6 |
| 2019 |
Sofia Open
|
1/8 | Daniil Medvedev |
7-5
2-6 2-6 |
| 2019 |
Sofia Open
|
1/16 | Robin Haase |
6-2
6-4 |
| 2019 |
Davis Cup Qualifying Round
|
Championship | Robin Haase |
2-6
4-6 |
| year | Event | RND | Winner | Results |
|---|
