Head to head
3
Hard
0
1
Clay
0
Karen Khachanov's wins on the left · John Isner's on the right · bar lengths share one scale
All meetings (4)
| 2019 | Indian Wells Masters | Hard | R16 | Karen Khachanov | 6-4 7-6(1) |
| 2018 | Paris Masters | Hard | R16 | Karen Khachanov | 6-4 6-7(9) 7-6(8) |
| 2018 | Canada Masters | Hard | R16 | Karen Khachanov | 7-6(5) 7-6(1) |
| 2017 | Roland Garros | Clay | R32 | Karen Khachanov | 7-6(1) 6-3 6-7(5) 7-6(3) |
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.