01/By surface
each with its own count, at equal weight
Hard
1-1
Level 1-1 in 2 meetings on hard
Clay
1-0
S. leads 1-0 in 1 meeting on clay
Grass
1-0
S. leads 1-0 in 1 meeting on grass
02/Every meeting
4 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, S. first |
|---|---|---|---|---|---|---|
| Sep 27, 2023 | Ningbo OpenWTA250 | hard | 2nd round | Siniakova K. | 6-3, 7-5 | 26 v 90 |
| Aug 28, 2019 | US OpenGrand Slam | hard | 1st round | Cirstea S. | 7-5, 6-2 | 106 v 37 |
| May 6, 2018 | Mutua Madrid OpenPremier | clay | 1st round | Cirstea S. | 6-4, 2-6, 6-4 | 36 v 51 |
| Jun 26, 2017 | AEGON InternationalPremier | grass | 1st round | Cirstea S. | 6-3, 6-2 | 62 v 39 |
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. Cirstea S. and Siniakova K. each carry the table against every opponent faced.