Mercedes Aristegui defeated Hikaru Sato 6-4 6-3 in the W15 Wellington 1 semi-final on hard. The upset overturned the form book — Hikaru Sato came in leading the head-to-head 1–0. Mercedes Aristegui claimed a first win over Hikaru Sato in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-12-19 | W25 Papamoa | R32 | hard | Hikaru Sato | 6-3 6-2 |
Averages over each player's completed matches in the selected window (15 vs 49). 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