01/By surface
each with its own count, at equal weight
Hard
0-3
J. leads 3-0 in 3 meetings on hard
Clay
Never on clay
no meeting on this surface
Grass
1-3
J. leads 3-1 in 4 meetings on grass
02/Every meeting
7 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, K. first |
|---|---|---|---|---|---|---|
| Jun 17, 2026 | German OpenWTA500 | grass | 2nd round | Pegula J. | 6-2, 6-4 | 34 v 4 |
| Oct 10, 2025 | Wuhan OpenWTA1000 | hard | quarterfinal | Pegula J. | 2-6, 6-0, 6-3 | 62 v 6 |
| Jun 24, 2025 | Bad Homburg OpenWTA250 | grass | 2nd round | Pegula J. | 6-2, 6-3 | 78 v 3 |
| Jun 22, 2024 | German OpenWTA500 | grass | quarterfinal | Pegula J. | 7-6, 3-6, 6-3 | 30 v 5 |
| Feb 20, 2022 | Qatar OpenWTA1000 | hard | 1st round | Pegula J. | 6-3, 6-2 | 48 v 17 |
| Jun 22, 2021 | Bad Homburg OpenWTA250 | grass | 2nd round | Siniakova K. | 6-3, 5-7, 6-4 | 76 v 25 |
| Jul 30, 2019 | Citi OpenInternational | hard | 1st round | Pegula J. | 6-4, 6-3 | 41 v 79 |
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. Siniakova K. and Pegula J. each carry the table against every opponent faced.