01/By surface
each with its own count, at equal weight
Hard
0-1
S. leads 1-0 in 1 meeting on hard
Clay
0-1
S. leads 1-0 in 1 meeting on clay
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, R. first |
|---|---|---|---|---|---|---|
| May 13, 2019 | Internazionali BNL d'ItaliaPremier | clay | 1st round | Williams S. | 6-4, 6-2 | 64 v 11 |
| Mar 22, 2019 | Sony Ericsson OpenPremier | hard | 2nd round | Williams S. | 6-3, 1-6, 6-1 | 63 v 10 |
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. Peterson R. and Williams S. each carry the table against every opponent faced.