Head to head
3
Hard
2
Denis Istomin's wins on the left · Lukas Lacko's on the right · bar lengths share one scale
All meetings (5)
| 2014 | Atlanta | Hard | R16 | Lukas Lacko | 5-7 6-1 6-4 |
| 2013 | Atlanta | Hard | R32 | Denis Istomin | 6-1 6-3 |
| 2010 | New Haven | Hard | R16 | Denis Istomin | 6-2 2-6 6-3 |
| 2010 | Zagreb | Hard | R32 | Lukas Lacko | 6-2 2-2 RET |
| 2008 | Australian Open | Hard | R128 | Denis Istomin | 6-3 6-7(1) 7-6(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.