The 27-year-old Austrian has not played since his Dubai opening-round defeat.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2019 |
Citi Open
|
1/8 | Benoit Paire |
7-6
6-3 |
| 2010 |
Open Sud de France
France, Montpellier |
Championship | John Isner |
7-5
6-2 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2021 |
Monte Carlo Masters
|
1/32 | Jordan Thompson |
6-4
6-7 7-6 |
| 2021 |
Miami Open
|
1/32 | Lorenzo Musetti |
6-3
6-3 |
| 2021 |
Mexican Open
|
1/16 | Stefanos Tsitsipas |
6-3
6-1 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2021 |
Miami Open
|
1/8 | Roberto Bautista Agut |
3-6
6-4 6-7 |
| 2021 |
Miami Open
|
1/16 | John Isner |
6-7
6-7 |
| 2021 |
Miami Open
|
1/32 | John Isner |
6-2
3-6 5-7 |
| 2021 |
Mexican Open
|
1/8 | Stefanos Tsitsipas |
6-3
6-2 |
| 2021 |
Mexican Open
|
1/16 | John Isner |
6-4
6-3 |
| 2021 |
Delray Beach Open
|
Quarter Finals | Sebastian Korda |
6-3
4-6 6-3 |
| 2021 |
Delray Beach Open
|
1/8 | John Isner |
4-6
6-7 |
