Serena Williams defeated Yung Jan Chan 6-1 6-3 in the US Open round of 128 on hard. The upset overturned the form book — Yung Jan Chan came in leading the head-to-head 1–0. Serena Williams claimed a first win over Yung Jan Chan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-04-09 | Charleston | R32 | clay | Yung Jan Chan | 5-3 RET |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (199 vs 125). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About