Kai Chen Chang defeated Tessah Andrianjafitrimo 6-4 6-3 in the W25 Kofu q32 on hard. The upset overturned the form book — Tessah Andrianjafitrimo came in leading the head-to-head 1–0, but Kai Chen Chang had been the form player, winning 7 of their last 10 on hard. Kai Chen Chang claimed a first win over Tessah Andrianjafitrimo in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-18 | W25 Kofu | Q16 | hard | Tessah Andrianjafitrimo | 6-4 6-7(5) 10-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.