01/By surface
each with its own count, at equal weight
Hard
0-1
K. leads 1-0 in 1 meeting on hard
Clay
0-1
K. leads 1-0 in 1 meeting on clay
Grass
0-1
K. leads 1-0 in 1 meeting on grass
02/Every meeting
3 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, A.L. first |
|---|---|---|---|---|---|---|
| Jun 26, 2019 | Eastbourne InternationalPremier | grass | 3rd round | Bertens K. | 6-3, 6-3 | 356 v 4 |
| Apr 23, 2019 | Porsche Tennis Grand PrixPremier | clay | 1st round | Bertens K. | 7-5, 6-2 | 681 v 7 |
| Oct 14, 2014 | BGL BNP Paribas Luxembourg OpenInternational | hard | 1st round | Bertens K. | 2-6, 6-2, 6-4 | 76 v 73 |
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. Friedsam A.L. and Bertens K. each carry the table against every opponent faced.