01/By surface
each with its own count, at equal weight
Hard
Never on hard
no meeting on this surface
Clay
4-0
S. leads 4-0 in 4 meetings on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
4 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, S. first |
|---|---|---|---|---|---|---|
| Jun 3, 2015 | French OpenGrand Slam | clay | quarterfinal | Williams S. | 6-1, 6-3 | 1 v 17 |
| May 18, 2014 | Internazionali BNL d'ItaliaPremier | clay | final | Williams S. | 6-3, 6-0 | 1 v 11 |
| Jun 6, 2013 | French OpenGrand Slam | clay | semifinal | Williams S. | 6-0, 6-1 | 1 v 5 |
| May 11, 2013 | Mutua Madrid OpenPremier | clay | semifinal | Williams S. | 7-5, 6-2 | 1 v 7 |
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. Williams S. and Errani S. each carry the table against every opponent faced.