01/By surface
each with its own count, at equal weight
Hard
0-3
S. leads 3-0 in 3 meetings on hard
Clay
Never on clay
no meeting on this surface
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, L. first |
|---|---|---|---|---|---|---|
| Feb 8, 2021 | Australian OpenGrand Slam | hard | 1st round | Williams S. | 6-1, 6-1 | 49 v 11 |
| Jan 10, 2020 | ASB ClassicInternational | hard | quarterfinal | Williams S. | 6-4, 6-3 | 73 v 10 |
| Mar 12, 2016 | BNP Paribas OpenPremier | hard | 2nd round | Williams S. | 6-2, 6-1 | 79 v 1 |
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. Siegemund L. and Williams S. each carry the table against every opponent faced.