Yen Hsun Lu defeated Sam Querrey 6-3 6-4 in the Miami Masters round of 128 on hard. The upset overturned the form book — Sam Querrey came in leading the head-to-head 3–0. Yen Hsun Lu claimed a first win over Sam Querrey in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-08-27 | US Open | R128 | hard | Sam Querrey | 6-7(4) 6-4 6-4 7-5 |
| 2009-08-16 | Cincinnati Masters | R64 | hard | Sam Querrey | 6-3 6-4 |
| 2007-01-28 | Delray Beach | RR | hard | Sam Querrey | 7-6(10) 6-4 |
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 (6 vs 46). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About