01/By surface
each with its own count, at equal weight
Hard
2-0
M. leads 2-0 in 2 meetings on hard
Clay
Never on clay
no meeting on this surface
Grass
1-0
M. leads 1-0 in 1 meeting on grass
02/Every meeting
3 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, M. first |
|---|---|---|---|---|---|---|
| Aug 13, 2019 | Western & Southern Financial Group Women's OpenPremier | hard | 1st round | Sharapova M. | 6-3, 7-6 | 97 v 37 |
| Jan 2, 2018 | Shenzhen OpenInternational | hard | 2nd round | Sharapova M. | 4-6, 6-3, 6-2 | 59 v 70 |
| Jun 28, 2014 | WimbledonGrand Slam | grass | 3rd round | Sharapova M. | 6-3, 6-0 | 5 v 44 |
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. Sharapova M. and Riske A. each carry the table against every opponent faced.