So Jung Kim defeated Akiko Yonemura 6-1 6-3 in the Wuxi 25K round of 32 on hard. So Jung Kim extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-05-21 | Nagano 25K | R16 | carpet | Akiko Yonemura | 6-2 4-6 6-1 |
| 2004-07-12 | Gunma 25K | QF | carpet | So Jung Kim | 6-3 6-3 |
Averages over each player's completed matches in the selected window (5 vs 1). 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