Miyabi Inoue defeated Mari Inoue 6-2 4-6 6-2 in the Fukuoka 50K qualifying round of 32 on grass. Miyabi Inoue extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-11-15 | Hyogo 10K | QF | carpet | Miyabi Inoue | 6-4 6-0 |
| 2010-09-20 | Makinohara 25K | R32 | carpet | Mari Inoue | 6-3 7-6(5) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.