Head to head
3
Hard
3
3
Clay
0
2
Grass
0
John Isner's wins on the left · Ryan Harrison's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (11)
| 2018 | Atlanta | Hard | F | John Isner | 5-7 6-3 6-4 |
| 2018 | Madrid Masters | Clay | R32 | John Isner | 7-6(1) 7-6(7) |
| 2018 | Acapulco | Hard | R32 | Ryan Harrison | 6-3 7-6(5) |
| 2017 | Atlanta | Hard | F | John Isner | 7-6(6) 7-6(7) |
| 2016 | Canada Masters | Hard | R32 | Ryan Harrison | 7-6(3) 6-7(4) 6-4 |
| 2013 | Newport | Grass | R32 | John Isner | 7-6(0) 6-2 |
| 2013 | Roland Garros | Clay | R64 | John Isner | 5-7 6-7(7) 6-3 6-1 8-6 |
| 2013 | Houston | Clay | R32 | John Isner | 7-6(4) 6-4 |
| 2013 | Sydney | Hard | R16 | Ryan Harrison | 6-4 6-4 |
| 2012 | Newport | Grass | SF | John Isner | 7-6(4) 6-3 |
| 2010 | Memphis | Hard | R32 | John Isner | 6-1 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.