Head to head
2
Hard
0
2
Clay
0
John Isner's wins on the left · Pierre-Hugues Herbert's on the right · bar lengths share one scale
All meetings (4)
| 2018 | Canada Masters | Hard | R32 | John Isner | 7-6(3) 6-2 |
| 2018 | Roland Garros | Clay | R32 | John Isner | 7-6(1) 6-4 7-6(4) |
| 2017 | US Open | Hard | R128 | John Isner | 6-1 6-3 4-6 6-3 |
| 2014 | Roland Garros | Clay | R128 | John Isner | 7-6(5) 7-6(4) 7-5 |
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.