Shiho Hisamatsu defeated Misaki Doi 6-3 4-6 6-3 in the Tsukuba 25K round of 16 on hard. The upset overturned the form book — Misaki Doi came in leading the head-to-head 2–0. Shiho Hisamatsu claimed a first win over Misaki Doi in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-05-18 | Nagano 25K | R32 | carpet | Misaki Doi | 7-6(0) 2-6 6-1 |
| 2009-03-23 | Kofu 10K | QF | hard | Misaki Doi | 2-6 6-1 6-0 |
Averages over each player's completed matches in the selected window (3 vs 198). 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