01/By surface
each with its own count, at equal weight
Hard
1-1
Level 1-1 in 2 meetings on hard
Clay
3-1
S. leads 3-1 in 4 meetings on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
6 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, S. first |
|---|---|---|---|---|---|---|
| May 4, 2021 | Mutua Madrid OpenWTA1000 | clay | 3rd round | Mertens E. | 4-6, 7-5, 7-5 | 3 v 16 |
| Aug 16, 2020 | J&T Banka Prague OpenInternational | clay | final | Halep S. | 6-2, 7-5 | 2 v 23 |
| Jan 27, 2020 | Australian OpenGrand Slam | hard | 4th round | Halep S. | 6-4, 6-4 | 3 v 17 |
| Feb 16, 2019 | Qatar Total OpenPremier | hard | final | Mertens E. | 3-6, 6-4, 6-3 | 3 v 21 |
| Jun 4, 2018 | French OpenGrand Slam | clay | 4th round | Halep S. | 6-2, 6-1 | 1 v 16 |
| May 8, 2018 | Mutua Madrid OpenPremier | clay | 2nd round | Halep S. | 6-0, 6-3 | 1 v 16 |
A record, never a share of meetings. Main-draw singles since 2013; a meeting ended by retirement is counted with the sets that were played and marked; a walkover is listed and counted in neither column. Halep S. and Mertens E. each carry the table against every opponent faced.