Akiko Morigami defeated Shiho Hisamatsu 6-3 6-4 in the Hilton Head Island 10K round of 16 on hard. The upset overturned the form book — Shiho Hisamatsu came in leading the head-to-head 2–1, but Akiko Morigami had been the form player, winning 2 of their last 5 on hard. Akiko Morigami narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-05-03 | Fukuoka 50K | R32 | grass | Akiko Morigami | 6-4 6-2 |
| 2001-05-07 | Fukuoka 50K | R16 | grass | Shiho Hisamatsu | 6-2 6-1 |
| 1999-10-04 | Saga 25K | R32 | grass | Shiho Hisamatsu | 1-6 6-4 6-3 |
Averages over each player's completed matches in the selected window (74 vs 3). 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