01/By surface
each with its own count, at equal weight
Hard
2-1
E. leads 2-1 in 3 meetings on hard
Clay
2-0
E. leads 2-0 in 2 meetings on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
5 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, E. first |
|---|---|---|---|---|---|---|
| May 10, 2025 | Internazionali BNL d'ItaliaWTA1000 | clay | 3rd round | Mertens E. | 7-5, 6-1 | 24 v 4 |
| Jan 15, 2025 | Australian OpenGrand Slam | hard | 2nd round | Pegula J. | 6-4, 6-2 | 34 v 6 |
| Jun 2, 2023 | French OpenGrand Slam | clay | 3rd round | Mertens E. | 6-1, 6-3 | 28 v 3 |
| Mar 11, 2021 | Dubai Duty Free Tennis ChampionshipsWTA500 | hard | quarterfinal | Mertens E. | 5-7, 7-5, 6-0 | 18 v 36 |
| Aug 26, 2020 | Western & Southern Financial Group Women's OpenPremier | hard | quarterfinal | Mertens E. | 6-1, 6-3 | 22 v 83 |
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. Mertens E. and Pegula J. each carry the table against every opponent faced.