Head to head
4
Hard
0
0
Grass
1
Andy Roddick's wins on the left · Yen-Hsun Lu's on the right · bar lengths share one scale
All meetings (5)
| 2011 | Shanghai Masters | Hard | R64 | Andy Roddick | 6-2 3-6 6-2 |
| 2010 | Wimbledon | Grass | R16 | Yen-Hsun Lu | 4-6 7-6(3) 7-6(4) 6-7(5) 9-7 |
| 2010 | Indian Wells Masters | Hard | R64 | Andy Roddick | 6-4 6-4 |
| 2010 | Memphis | Hard | R16 | Andy Roddick | 7-6(2) 6-4 |
| 2007 | Memphis | Hard | QF | Andy Roddick | 6-4 7-6(7) |
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.