Kai Chen Chang defeated Junri Namigata 2-6 6-3 6-4 in the Kofu 50K qualifying round on hard. The upset overturned the form book — Junri Namigata came in leading the head-to-head 2–0. Kai Chen Chang claimed a first win over Junri Namigata in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-08-25 | Tsukuba 25K | F | hard | Junri Namigata | 6-0 7-6(3) |
| 2009-04-20 | Changwon 25K | SF | hard | Junri Namigata | 6-4 6-7(9) 6-2 |
Averages over each player's completed matches in the selected window (129 vs 199). 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. About