Sam Matheson defeated Punnakrit Kritakara 6-2 6-2 in the Vietnam F7 q16 on hard. The upset overturned the form book — Punnakrit Kritakara came in leading the head-to-head 1–0, but Sam Matheson had been the form player, winning 4 of their last 10 on hard. Sam Matheson claimed a first win over Punnakrit Kritakara in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-10-31 | Vietnam F9 | Q32 | hard | Punnakrit Kritakara | 2-6 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.