Simona Halep defeated Garbine Muguruza 6-1 6-4 in the Roland Garros semi-final on clay. The upset overturned the form book — Garbine Muguruza came in leading the head-to-head 4–2, defending last year's round of 16. Simona Halep narrowed the head-to-head to 4–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2020-09-14 | Rome | SF | clay | Simona Halep | 6-3 4-6 6-4 |
| 2020-01-20 | Australian Open | SF | hard | Garbine Muguruza | 7-6(8) 7-5 |
| 2017-08-14 | Cincinnati | F | hard | Garbine Muguruza | 6-1 6-0 |
| 2015-04-20 | Stuttgart | R16 | clay | Simona Halep | 3-6 6-1 6-3 |
| 2015-02-07 | Fed Cup WG R1: ROU vs ESP | RR | hard | Garbine Muguruza | 6-4 6-3 |
| 2014-09-22 | Wuhan | R32 | hard | Garbine Muguruza | 2-6 6-2 6-3 |
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 (197 vs 196). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About