Head to head
1
Hard
3
Yen-Hsun Lu's wins on the left · Sam Querrey's on the right · bar lengths share one scale
All meetings (4)
| 2021 | Miami Masters | Hard | R128 | Yen-Hsun Lu | 6-3 6-4 |
| 2012 | US Open | Hard | R128 | Sam Querrey | 6-7(4) 6-4 6-4 7-5 |
| 2009 | Cincinnati Masters | Hard | R64 | Sam Querrey | 6-3 6-4 |
| 2007 | Delray Beach | Hard | RR | Sam Querrey | 7-6(10) 6-4 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.