Shiho Hisamatsu defeated Rika Fujiwara 6-4 6-3 in the Washington DC 75K round of 16 on hard. The upset overturned the form book — Rika Fujiwara came in leading the head-to-head 6–1, but Shiho Hisamatsu had been the form player, winning 4 of their last 8 on hard. Shiho Hisamatsu narrowed the head-to-head to 6–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-11-16 | Pune 50K | R16 | hard | Rika Fujiwara | 6-2 6-0 |
| 2007-11-26 | Xiamen 75K | QF | hard | Rika Fujiwara | 6-3 6-0 |
| 2004-09-06 | Ibaraki 25K | F | hard | Rika Fujiwara | 4-6 7-5 6-0 |
| 2003-04-28 | Gifu 50K | R32 | grass | Rika Fujiwara | 6-2 6-1 |
| 2002-08-05 | Beijing 25K | QF | hard | Rika Fujiwara | 6-1 6-4 |
| 2000-05-29 | Shenzhen 25K | R32 | hard | Rika Fujiwara | 6-3 6-2 |
| 1998-11-16 | Haibara 10K | QF | carpet | Shiho Hisamatsu | 2-6 6-2 6-1 |
Averages over each player's completed matches in the selected window (3 vs 23). 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