Head to head
1
Hard
0
1
Clay
1
Denis Istomin's wins on the left · Santiago Giraldo's on the right · bar lengths share one scale
All meetings (3)
| 2013 | Washington | Hard | R64 | Denis Istomin | 6-3 6-4 |
| 2012 | Barcelona | Clay | R64 | Santiago Giraldo | 7-6(3) 6-4 |
| 2009 | Roland Garros | Clay | R128 | Denis Istomin | 6-3 6-7(2) 6-3 7-6(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.