01/By surface
each with its own count, at equal weight
Hard
2-0
Y. leads 2-0 in 2 meetings on hard
Clay
Never on clay
no meeting on this surface
Grass
1-0
Y. leads 1-0 in 1 meeting on grass
02/Every meeting
3 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, Y. first |
|---|---|---|---|---|---|---|
| Mar 23, 2016 | Sony Ericsson OpenPremier | hard | 1st round | Wickmayer Y. | 6-2, 6-1 | 47 v 70 |
| Jun 8, 2015 | Aegon OpenInternational | grass | 1st round | Wickmayer Y. | 6-4, 6-2 | 92 v 41 |
| Mar 12, 2015 | BNP Paribas OpenPremier | hard | 1st round | Wickmayer Y. | 6-1, 7-5 | 93 v 56 |
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. Wickmayer Y. and Knapp K. each carry the table against every opponent faced.