Zi Yan defeated Suchanun Viratprasert 6-4 6-3 in the Shenzhen 50K qualifying round on hard. The upset overturned the form book — Suchanun Viratprasert came in leading the head-to-head 1–0, but Zi Yan had been the form player, winning 4 of their last 7 on hard. Zi Yan claimed a first win over Suchanun Viratprasert in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-01 | Washington DC 75K | QF | hard | Suchanun Viratprasert | 7-5 2-6 7-5 |
Averages over each player's completed matches in the selected window (52 vs 1). 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. Small sample — read as indicative. About