Cheng Yu Yu defeated Wishaya Trongcharoenchaikul 6-3 6-2 in the Chinese Taipei F3 qualifying round on hard. The upset overturned the form book — Wishaya Trongcharoenchaikul came in leading the head-to-head 3–1, but Cheng Yu Yu had been the form player, winning 2 of their last 5 on hard. Cheng Yu Yu narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-06 | M15 Nishi-Tama 1 | R32 | hard | Wishaya Trongcharoenchaikul | 6-4 7-6(3) |
| 2017-07-10 | China F12 | R32 | hard | Wishaya Trongcharoenchaikul | 4-6 7-6(2) 7-6(1) |
| 2017-05-22 | Singapore F1 | R16 | hard | Wishaya Trongcharoenchaikul | 6-2 6-4 |
| 2016-03-21 | Japan F3 | Q32 | hard | Cheng Yu Yu | 1-6 4-2 |
Averages over each player's completed matches in the selected window (89 vs 200). 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