01/By surface
each with its own count, at equal weight
Hard
0-1
Ka. leads 1-0 in 1 meeting on hard
Clay
0-1
Ka. leads 1-0 in 1 meeting on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
2 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, S. first |
|---|---|---|---|---|---|---|
| Apr 27, 2026 | Mutua Madrid OpenWTA1000 | clay | 4th round | Pliskova Ka. | 6-4, 6-3 | 88 v 197 |
| Feb 8, 2026 | Qatar OpenWTA1000 | hard | 1st round | Pliskova Ka. | 6-1, 6-2 | 62 v 418 |
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. Sierra S. and Pliskova Ka. each carry the table against every opponent faced.