01/By surface
each with its own count, at equal weight
Hard
1-0
E. leads 1-0 in 1 meeting on hard
Clay
Never on clay
no meeting on this surface
Grass
1-0
E. leads 1-0 in 1 meeting on grass
02/Every meeting
2 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, E. first |
|---|---|---|---|---|---|---|
| Jan 11, 2022 | Sydney Tennis ClassicWTA500 | hard | 1st round | Mertens E. | 6-2, 7-6 | 20 v 104 |
| Jul 2, 2019 | WimbledonGrand Slam | grass | 1st round | Mertens E. | 6-2, 6-0 | 21 v 100 |
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. Mertens E. and Ferro F. each carry the table against every opponent faced.