Mari Tanaka defeated Chiaki Okadaue 6-3 7-5 in the Hamamatsu 25K round of 16 on carpet. Mari Tanaka extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-05-26 | Changwon 25K | R16 | hard | Mari Tanaka | 6-3 6-2 |
| 2007-06-04 | Tokyo 10K | SF | hard | Chiaki Okadaue | 6-2 6-4 |
Averages over each player's completed matches in the selected window (3 vs 2). 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