Mi Yoo defeated Chiaki Okadaue 7-6 6-4 in the Miyazaki 25K round of 16 on carpet. Mi Yoo extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-05-20 | Goyang 25K | R32 | hard | Mi Yoo | 6-2 6-1 |
| 2007-07-09 | Miyazaki 25K | R16 | carpet | Chiaki Okadaue | 6-2 6-7(4) 6-4 |
Averages over each player's completed matches in the selected window (1 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. Small sample — read as indicative. About