Head to head
4
Hard
1
1
Clay
0
Andy Roddick's wins on the left · Nikolay Davydenko's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (7)
| 2009 | Madrid Masters | Clay | R16 | Andy Roddick | W/O |
| 2008 | Miami Masters | Hard | SF | Nikolay Davydenko | 7-6(5) 6-2 |
| 2007 | Masters Cup | Hard | RR | Andy Roddick | 6-3 4-6 6-2 |
| 2005 | Australian Open | Hard | QF | Andy Roddick | 6-3 7-5 4-1 RET |
| 2004 | Doha | Hard | R32 | Andy Roddick | 6-3 6-4 |
| 2003 | St. Poelten | Clay | F | Andy Roddick | 6-3 6-2 |
| 2002 | Delray Beach | Hard | R32 | Andy Roddick | 6-4 6-1 |
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.