Head to head
1
Hard
1
1
Clay
0
0
Carpet
1
Nicolas Kiefer's wins on the left · Igor Andreev's on the right · bar lengths share one scale
All meetings (4)
| 2009 | Cincinnati Masters | Hard | R64 | Igor Andreev | 6-1 7-5 |
| 2005 | Moscow | Carpet | F | Igor Andreev | 5-7 7-6(3) 6-2 |
| 2005 | Roland Garros | Clay | R32 | Nicolas Kiefer | 6-4 7-6(7) 3-6 6-4 |
| 2004 | Miami Masters | Hard | R128 | Nicolas Kiefer | 6-3 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.