Caroline Wozniacki defeated Magdalena Rybarikova 6-2 6-3 in the Cincinnati round of 64 on hard. The result followed the form book — Caroline Wozniacki came in leading the head-to-head 3–1, defending last year's quarter-final. Caroline Wozniacki extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-01-15 | Australian Open | R16 | hard | Caroline Wozniacki | 6-3 6-0 |
| 2014-08-25 | US Open | R128 | hard | Caroline Wozniacki | 6-1 3-6 2-0 RET |
| 2013-09-23 | Tokyo | R16 | hard | Caroline Wozniacki | 6-1 6-1 |
| 2009-02-09 | Pattaya | QF | hard | Magdalena Rybarikova | 6-4 6-1 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (199 vs 186). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About