Tomoyo Takagishi defeated Chiaki Okadaue 2-6 6-4 6-1 in the Hiroshima 10K semi-final on carpet. The upset overturned the form book — Chiaki Okadaue came in leading the head-to-head 2–0. Tomoyo Takagishi claimed a first win over Chiaki Okadaue in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-10-16 | Makinohara 25K | R16 | carpet | Chiaki Okadaue | 1-6 6-2 6-2 |
| 2006-05-29 | Gunma 25K | R32 | carpet | Chiaki Okadaue | 6-2 4-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.