01/By surface
each with its own count, at equal weight
Hard
1-0
M. leads 1-0 in 1 meeting on hard
Clay
0-1
L. leads 1-0 in 1 meeting on clay
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, M. first |
|---|---|---|---|---|---|---|
| Jul 30, 2025 | Canadian OpenWTA1000 | hard | 2nd round | Keys M. | 6-2, 6-1 | 8 v 54 |
| Jul 4, 2025 | WimbledonGrand Slam | grass | 3rd round | Siegemund L. | 6-3, 6-3 | 8 v 104 |
| Jun 27, 2016 | WimbledonGrand Slam | grass | 1st round | Keys M. | 6-3, 6-1 | 9 v 42 |
| Apr 6, 2016 | Family Circle CupPremier | clay | 2nd round | Siegemund L. | 6-7, 6-4, 6-4 | 22 v 75 |
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. Keys M. and Siegemund L. each carry the table against every opponent faced.