01/By surface
each with its own count, at equal weight
Hard
3-2
D. leads 3-2 in 5 meetings on hard
Clay
1-0
D. leads 1-0 in 1 meeting 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, D. first |
|---|---|---|---|---|---|---|
| Apr 5, 2024 | Charleston OpenWTA500 | clay | quarterfinal | Collins D. | 6-3, 6-4 | 22 v 30 |
| Jan 8, 2024 | Hobart InternationalWTA250 | hard | 1st round | Mertens E. | 6-2, 6-3 | 54 v 29 |
| Aug 30, 2023 | US OpenGrand Slam | hard | 2nd round | Mertens E. | 3-6, 7-6, 6-1 | 34 v 32 |
| Feb 14, 2023 | Qatar OpenWTA500 | hard | 1st round | Collins D. | 6-4, 7-6 | 42 v 37 |
| Jan 24, 2022 | Australian OpenGrand Slam | hard | 4th round | Collins D. | 4-6, 6-4, 6-4 | 30 v 26 |
| Sep 30, 2021 | Chicago Fall Tennis ClassicWTA500 | hard | 3rd round | Collins D. | 6-2, 6-4 | 28 v 18 |
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. Collins D. and Mertens E. each carry the table against every opponent faced.