No. 5 seed Alexander Zverev drew Kevin Anderson, a former No. 5, in the first round.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2014 |
Kosice
|
1/16 | Gerald Melzer |
1-6
0-2 |
| 2014 |
Furth, Qualification
|
Quarter Finals | Maximilian Neuchrist |
6-7
4-6 |
| 2014 |
Power Horse Cup, Qualification
|
1/8 | Mirza Basic |
4-6
6-1 6-4 |
| 2014 |
Power Horse Cup, Qualification
|
1/16 | Bjorn Phau |
5-7
6-3 6-4 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2020 |
Roland Garros, Qualification WTA
|
1/48 (Special Qual) | Lesley Kerkhove |
4-6
5-7 |
| 2020 |
US Open WTA
|
1/64 | Sofia Kenin |
2-6
2-6 |
