Chiaki Okadaue defeated Yuuki Tanaka 6-1 6-4 in the Nishi Tama 10K round of 16 on hard. The result followed the form book — Chiaki Okadaue came in leading the head-to-head 2–1. Chiaki Okadaue extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-05-19 | Karuizawa 25K | R32 | grass | Chiaki Okadaue | 3-6 6-3 6-3 |
| 2013-03-18 | Kofu 10K | SF | hard | Yuuki Tanaka | 6-3 5-7 7-5 |
| 2012-06-11 | Tokyo 10K | R32 | hard | Chiaki Okadaue | 6-2 6-1 |
Averages over each player's completed matches in the selected window (2 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