01/By surface
each with its own count, at equal weight
Hard
1-0
J. leads 1-0 in 1 meeting on hard
Clay
1-1
Level 1-1 in 2 meetings on clay
Grass
0-1
K. leads 1-0 in 1 meeting on grass
02/Every meeting
4 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, J. first |
|---|---|---|---|---|---|---|
| Mar 1, 2021 | Qatar Total OpenWTA500 | hard | 1st round | Ostapenko J. | 6-0, 6-2 | 51 v 11 |
| Sep 23, 2020 | Internationaux de StrasbourgInternational | clay | 2nd round | Ostapenko J.ret. | 2-6, 6-4, 4-2 | 43 v 8 |
| May 6, 2019 | Mutua Madrid OpenPremier | clay | 2nd round | Bertens K. | 6-4, 6-3 | 29 v 7 |
| Jun 27, 2016 | WimbledonGrand Slam | grass | 1st round | Bertens K. | 6-3, 6-2 | 34 v 28 |
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. Ostapenko J. and Bertens K. each carry the table against every opponent faced.