Second-seeded Carina Witthoeft is out after she was beaten, 4-6, 6-2, 6-2, by Donna Vekic.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Tianjin Open, Qualification
|
1/12 (Special Qual) | Sabine Lisicki |
6-2
6-1 |
| 2018 |
Tashkent Open
|
1/16 | Vera Lapko |
1-6
3-6 |
| 2018 |
US Open, Qualification WTA
|
1/32 | Anastasia Potapova |
6-7
3-6 |
| 2018 |
US Open, Qualification WTA
|
1/64 | Bojana Jovanovski |
6-4
6-4 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Morelos
|
1/16 | Cristian Garin |
2-6
4-6 |
| 2018 |
Launceston
|
1/8 | Alexander Sarkissian |
5-7
3-6 |
| 2018 |
Launceston
|
1/16 | Marinko Matosevic |
4-6
6-4 6-7 |
| 2018 |
Australian Open, Qualification ATP
|
1/64 | Dennis Novikov |
3-6
6-7 |
