Junri Namigata defeated Akiko Yonemura 6-7 6-1 6-1 in the Nagoya 25K qualifying round on hard. The upset overturned the form book — Akiko Yonemura came in leading the head-to-head 5–4. Junri Namigata narrowed the head-to-head to 5–5.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-05-06 | Fukuoka 50K | R32 | grass | Junri Namigata | 2-6 6-1 6-4 |
| 2010-11-22 | Toyota 75K | R32 | carpet | Junri Namigata | 6-7(4) 7-6(4) 6-3 |
| 2010-08-02 | Beijing 75K | R32 | hard | Junri Namigata | 6-7(3) 6-4 6-3 |
| 2010-05-24 | Kusatsu 25K | F | carpet | Akiko Yonemura | 6-4 7-6(4) |
| 2007-07-30 | Obihiro 25K | QF | carpet | Akiko Yonemura | 6-2 6-4 |
| 2007-07-16 | Kurume 25K | QF | grass | Akiko Yonemura | 1-6 7-6(5) 6-1 |
| 2007-05-07 | Fukuoka 50K | R16 | carpet | Junri Namigata | 7-5 6-3 |
| 2005-10-17 | Makinohara 25K | SF | carpet | Akiko Yonemura | 6-0 6-2 |
| 2001-10-08 | Saga 25K | R32 | grass | Akiko Yonemura | 1-6 6-4 6-2 |
Averages over each player's completed matches in the selected window (69 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