Head to head
0
Hard
1
1
Clay
1
1
Grass
1
Denis Kudla's wins on the left · Ivo Karlovic's on the right · bar lengths share one scale
All meetings (5)
| 2018 | Houston | Clay | R16 | Ivo Karlovic | 7-5 7-5 |
| 2017 | Newport | Grass | R16 | Ivo Karlovic | 6-4 6-4 |
| 2016 | Madrid Masters | Clay | R64 | Denis Kudla | 6-7(7) 7-6(5) 7-6(4) |
| 2013 | Moscow | Hard | R32 | Ivo Karlovic | 6-2 6-3 |
| 2011 | Newport | Grass | R32 | Denis Kudla | 7-6(4) 4-6 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.