Patcharin Cheapchadej defeated Aleksandrina Naydenova 6-3 6-3 in the W25 Hua Hin round of 32 on hard. The upset overturned the form book — Aleksandrina Naydenova came in leading the head-to-head 1–0, but Patcharin Cheapchadej had been the form player, winning 5 of their last 7 on hard. Patcharin Cheapchadej claimed a first win over Aleksandrina Naydenova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-11-06 | W25 Hua Hin | R32 | hard | Aleksandrina Naydenova | 6-4 7-6(4) |