Chiaki Okadaue defeated Shuko Aoyama 6-1 6-3 in the Almaty 25K round of 16 on hard. The upset overturned the form book — Shuko Aoyama came in leading the head-to-head 1–0, but Chiaki Okadaue had been the form player, winning 3 of their last 6 on hard. Chiaki Okadaue claimed a first win over Shuko Aoyama in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-10-24 | Hamanako 25K | R32 | carpet | Shuko Aoyama | 6-1 2-6 6-3 |
Averages over each player's completed matches in the selected window (2 vs 75). 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