Twenty-one of 25 former champions were, had been, or would be ranked in the Top 20.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2005 |
Wimbledon WTA
England, Wimbledon |
Championship | Mary Pierce |
1-6
4-6 |
| 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 |
|---|---|---|---|---|
| 2016 |
US Open WTA
United States, New York, Flushing Meadows |
1/64 | Denisa Allertova |
7-6
6-1 |
| 2016 |
Cincinnati Masters
United States, Ohio, Cincinnati |
1/32 | Donna Vekic |
6-4
6-2 |
| 2016 |
Summer Olympics WTA
|
1/32 | Carla Suarez Navarro |
6-2
1-6 2-6 |
