Shiho Hisamatsu defeated Antonia Matic 6-3 7-6 in the Ibaraki 25K round of 16 on hard. The upset overturned the form book — Antonia Matic came in leading the head-to-head 2–0. Shiho Hisamatsu claimed a first win over Antonia Matic in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-12-08 | Shenzhen 50K | R32 | hard | Antonia Matic | 6-2 6-7(1) 6-2 |
| 2001-01-15 | Boca Raton FL 10K | R32 | hard | Antonia Matic | 6-2 4-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.