Twenty-one of 25 former champions were, had been, or would be ranked in the Top 20.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Internazionali BNL d'Italia
|
1/32 | Aleksandra Krunic |
2-6
6-0 6-3 |
| 2018 |
Swiss Women's Championship, Qualification
|
1/12 (Special Qual) | Kathinka Von Deichmann |
6-1
6-3 |
| 2018 |
Miami Open, Qualification
|
1/12 (Special Qual) | Viktorija Golubic |
4-6
3-6 |
| 2018 |
Miami Open, Qualification
|
1/24 (Special Qual) | Roberta Vinci |
7-5
1-6 2-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Davis Cup Group 2 - Europe/Africa
|
Championship | Kamil Majchrzak |
3-6
2-6 |
| 2018 |
Davis Cup Group 2 - Europe/Africa
|
Championship | Hubert Hurkacz |
6-7
5-7 |
| 2018 |
Davis Cup Group 2 - Europe/Africa
|
Championship | Adrian Ungur |
6-0
7-6 |
| 2017 |
Rome 2
|
1/8 | Daniel Gimeno-Traver |
6-7
5-7 |
