01/By surface
each with its own count, at equal weight
Hard
5-4
I. leads 5-4 in 9 meetings on hard
Clay
2-0
I. leads 2-0 in 2 meetings on clay
Grass
0-1
J. leads 1-0 in 1 meeting on grass
02/Every meeting
12 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, I. first |
|---|---|---|---|---|---|---|
| Aug 22, 2026 | Western & Southern Financial Group Women's OpenWTA1000 | hard | semifinal | Pegula J. | 7-5, 4-6, 6-4 | 5 v 3 |
| May 13, 2026 | Internazionali BNL d'ItaliaWTA1000 | clay | quarterfinal | Swiatek I. | 6-1, 6-2 | 3 v 5 |
| Jun 28, 2025 | Bad Homburg OpenWTA250 | grass | final | Pegula J. | 6-4, 7-5 | 8 v 3 |
| Sep 5, 2024 | US OpenGrand Slam | hard | quarterfinal | Pegula J. | 6-2, 6-4 | 1 v 6 |
| Nov 6, 2023 | WTA FinalsTour Championships | hard | final | Swiatek I. | 6-1, 6-0 | 2 v 5 |
| Aug 12, 2023 | Canadian OpenWTA1000 | hard | semifinal | Pegula J. | 6-2, 6-7, 6-4 | 1 v 3 |
| Feb 18, 2023 | Qatar OpenWTA500 | hard | final | Swiatek I. | 6-3, 6-0 | 1 v 4 |
| Oct 15, 2022 | San Diego OpenWTA250 | hard | semifinal | Swiatek I. | 4-6, 6-2, 6-2 | 1 v 6 |
| Sep 8, 2022 | US OpenGrand Slam | hard | quarterfinal | Swiatek I. | 6-3, 7-6 | 1 v 8 |
| Jun 1, 2022 | French OpenGrand Slam | clay | quarterfinal | Swiatek I. | 6-3, 6-2 | 1 v 11 |
| Apr 1, 2022 | Miami OpenWTA1000 | hard | semifinal | Swiatek I. | 6-2, 7-5 | 2 v 21 |
| Jul 31, 2019 | Citi OpenInternational | hard | 2nd round | Pegula J. | 5-7, 6-4, 6-1 | 66 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. Swiatek I. and Pegula J. each carry the table against every opponent faced.