01/By surface
each with its own count, at equal weight
Hard
0-2
A. leads 2-0 in 2 meetings on hard
Clay
Never on clay
no meeting on this surface
Grass
Never on grass
no meeting on this surface
02/Every meeting
2 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, K. first |
|---|---|---|---|---|---|---|
| Sep 3, 2015 | US OpenGrand Slam | hard | 2nd round | Kerber A. | 7-5, 6-2 | 34 v 11 |
| Aug 12, 2013 | Western & Southern Financial Group Women's OpenPremier | hard | 1st round | Kerber A. | 6-7, 6-0, 6-1 | 59 v 8 |
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. Knapp K. and Kerber A. each carry the table against every opponent faced.