01/By surface
each with its own count, at equal weight
Hard
1-1
Level 1-1 in 2 meetings on hard
Clay
Never on clay
no meeting on this surface
Grass
1-1
Level 1-1 in 2 meetings on grass
02/Every meeting
4 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, A. first |
|---|---|---|---|---|---|---|
| Sep 10, 2019 | Zhengzhou OpenInternational | hard | 1st round | Riske A. | 5-7, 6-4, 7-6 | 34 v 15 |
| Jun 20, 2018 | Mallorca OpenInternational | grass | 1st round | Riske A. | 5-7, 6-2, 6-1 | 61 v 11 |
| Jun 16, 2014 | AEGON InternationalPremier | grass | 1st round | Kerber A. | 7-6, 6-4 | 44 v 9 |
| Jan 17, 2014 | Australian OpenGrand Slam | hard | 3rd round | Kerber A. | 6-3, 6-4 | 53 v 9 |
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. Riske A. and Kerber A. each carry the table against every opponent faced.