Head to head
7
Hard
1
Marin Cilic's wins on the left · Denis Istomin's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 2016 | Rotterdam | Hard | R32 | Marin Cilic | 7-6(5) 6-4 |
| 2015 | Moscow | Hard | R16 | Marin Cilic | 7-6(3) 3-6 6-3 |
| 2014 | Canada Masters | Hard | R64 | Marin Cilic | 6-2 4-6 7-5 |
| 2014 | Sydney | Hard | R16 | Denis Istomin | 6-3 6-4 |
| 2013 | Brisbane | Hard | R32 | Marin Cilic | 6-7(3) 7-6(5) 6-4 |
| 2010 | Washington | Hard | R32 | Marin Cilic | 6-4 6-2 |
| 2009 | US Open | Hard | R32 | Marin Cilic | 6-1 6-4 6-3 |
| 2009 | Chennai | Hard | R16 | Marin Cilic | 6-0 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.