Head to head
1
Hard
0
0
Clay
1
Igor Andreev's wins on the left · Kei Nishikori's on the right · bar lengths share one scale
All meetings (2)
| 2011 | Houston | Clay | R16 | Kei Nishikori | 6-3 6-3 |
| 2011 | Indian Wells Masters | Hard | R128 | Igor Andreev | 6-4 6-7(2) 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.