Katie Volynets defeated Marcela Zacarias 3-6 7-5 10-6 in the W25 Boca Raton q16 on hard. The upset overturned the form book — Marcela Zacarias came in leading the head-to-head 3–0. Katie Volynets claimed a first win over Marcela Zacarias in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-10-14 | W60 Las Vegas | QF | hard | Marcela Zacarias | 7-5 6-4 |
| 2021-09-29 | W60 Berkeley | R32 | hard | Marcela Zacarias | 7-6(5) 3-6 6-2 |
| 2019-06-13 | W25 Sumter | R16 | hard | Marcela Zacarias | 6-3 6-1 |
Averages over each player's completed matches in the selected window (200 vs 33). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About