Twenty-one of 25 former champions were, had been, or would be ranked in the Top 20.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2006 |
Generali Ladies Linz
Austria, Linz |
Championship | Vera Zvonareva |
6-4
6-6 |
| 2006 |
Zurich Open
Switzerland, Zurich |
Championship | Katarina Srebotnik |
6-3
7-5 |
| 2006 |
Porsche Tennis Grand Prix
Germany, Stuttgart |
Championship | Jelena Jankovic |
7-6
6-3 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2020 |
THIEMs7, Final Stage
|
Championship | Matteo Berrettini |
4-6
2-6 |
| 2020 |
THIEMs7, Final Stage
|
Semi Finals | Dominic Thiem |
6-7
6-2 6-2 |
| 2020 |
THIEMs7, Soccercoin Group
|
Championship | Roberto Bautista Agut |
6-0
6-1 |
| 2020 |
THIEMs7, Soccercoin Group
|
Championship | Matteo Berrettini |
6-4
6-3 |
| 2020 |
THIEMs7, Soccercoin Group
|
Championship | Roberto Bautista Agut |
4-6
3-6 |
| 2020 |
Region of Valencia
|
Championship | Roberto Bautista Agut |
1-6
1-6 |
| 2020 |
Region of Valencia
|
Championship | Roberto Bautista Agut |
4-6
4-6 |
