Head to head
2
Hard
6
1
Clay
1
0
Grass
2
John Isner's wins on the left · Marin Cilic's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (12)
| 2019 | US Open | Hard | R32 | Marin Cilic | 7-5 3-6 7-6(6) 6-4 |
| 2018 | Tour Finals | Hard | RR | Marin Cilic | 6-7(2) 6-3 6-4 |
| 2018 | Miami Masters | Hard | R16 | John Isner | 7-6(0) 6-3 |
| 2017 | Queen's Club | Grass | R32 | Marin Cilic | 7-5 6-3 |
| 2017 | Rome Masters | Clay | QF | John Isner | 7-6(3) 2-6 7-6(2) |
| 2016 | Paris Masters | Hard | SF | John Isner | 6-4 6-3 |
| 2016 | Davis Cup WG QF: USA vs CRO | Hard | RR | Marin Cilic | 7-6(9) 6-3 6-4 |
| 2015 | Wimbledon | Grass | R32 | Marin Cilic | 7-6(4) 6-7(6) 6-4 6-7(4) 12-10 |
| 2014 | Delray Beach | Hard | SF | Marin Cilic | 7-6(5) 6-3 |
| 2013 | Miami Masters | Hard | R32 | Marin Cilic | 6-3 7-6(3) |
| 2012 | Madrid Masters | Clay | R32 | Marin Cilic | 7-6(4) 7-6(3) |
| 2011 | Australian Open | Hard | R32 | Marin Cilic | 4-6 6-2 6-7(5) 7-6(2) 9-7 |
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.