01/By surface
each with its own count, at equal weight
Hard
1-0
K. leads 1-0 in 1 meeting on hard
Clay
2-0
K. leads 2-0 in 2 meetings on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
3 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, K. first |
|---|---|---|---|---|---|---|
| Jan 21, 2020 | Australian OpenGrand Slam | hard | 1st round | Bertens K. | 6-1, 6-4 | 10 v 105 |
| May 10, 2017 | Mutua Madrid OpenPremier | clay | 3rd round | Bertens K. | 6-1, 7-5 | 19 v 36 |
| Jul 9, 2014 | Bucharest OpenInternational | clay | 1st round | Bertens K. | 6-0, 3-6, 6-2 | 85 v 64 |
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. Bertens K. and Begu I. each carry the table against every opponent faced.