Darren K Polkinghorne defeated Phuong Van Nguyen 6-1 6-1 in the Vietnam F2 qualifying round of 32 on hard. The upset overturned the form book — Phuong Van Nguyen came in leading the head-to-head 2–0. Darren K Polkinghorne claimed a first win over Phuong Van Nguyen in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-04-30 | Vietnam F1 | R32 | hard | Phuong Van Nguyen | 6-3 6-3 |
| 2016-08-08 | Vietnam F3 | Q32 | hard | Phuong Van Nguyen | 6-4 1-6 6-3 |
Averages over each player's completed matches in the selected window (27 vs 14). 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