Mi Yoo defeated Mari Tanaka 6-1 6-4 in the Seogwipo 10K qualifying round on hard. The upset overturned the form book — Mari Tanaka came in leading the head-to-head 3–0. Mi Yoo claimed a first win over Mari Tanaka in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-03-22 | Kofu 10K | QF | hard | Mari Tanaka | 7-6(3) 6-2 |
| 2009-06-29 | Gimcheon 10K | QF | hard | Mari Tanaka | 6-2 6-0 |
| 2004-09-13 | Kyoto 10K | R32 | carpet | Mari Tanaka | 2-6 6-2 6-2 |
Averages over each player's completed matches in the selected window (1 vs 3). 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