Rina Saigo defeated Sonja Zhiyenbayeva 6-1 4-6 6-4 in the W50 Wuning quarter-final on hard. Rina Saigo claimed a first win over Sonja Zhiyenbayeva in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-08-08 | W75 Ourense | SF | hard | Sonja Zhiyenbayeva | 6-1 7-6 |
Averages over each player's completed matches in the selected window (32 vs 5). 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