Head to head
Rivalry summary
John Isner and Juan Martin del Potro met 12 times on the ATP tour between 2008 and 2018. Juan Martin del Potro leads the head-to-head 8–4 against John Isner. By surface, Potro leads 7–3 on hard. They contested 1 finals, with Isner winning 0 of them.
3
Hard
7
0
Clay
1
1
Grass
0
John Isner's wins on the left · Juan Martin del Potro's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (12)
| 2018 | US Open | Hard | QF | Juan Martin del Potro | 6-7(5) 6-3 7-6(4) 6-2 |
| 2018 | Roland Garros | Clay | R16 | Juan Martin del Potro | 6-4 6-4 6-4 |
| 2018 | Miami Masters | Hard | SF | John Isner | 6-1 7-6(2) |
| 2017 | Paris Masters | Hard | QF | John Isner | 6-4 6-7(5) 6-4 |
| 2017 | Canada Masters | Hard | R64 | Juan Martin del Potro | 7-5 7-5 |
| 2016 | Stockholm | Hard | R32 | Juan Martin del Potro | 6-4 7-6(6) |
| 2016 | Queen's Club | Grass | R32 | John Isner | 7-6(2) 6-4 |
| 2013 | Cincinnati Masters | Hard | SF | John Isner | 6-7(5) 7-6(9) 6-3 |
| 2013 | Washington | Hard | F | Juan Martin del Potro | 3-6 6-1 6-2 |
| 2011 | Memphis | Hard | R32 | Juan Martin del Potro | 6-4 6-3 |
| 2009 | Indian Wells Masters | Hard | R16 | Juan Martin del Potro | 7-6(4) 7-6(3) |
| 2008 | Washington | Hard | QF | Juan Martin del Potro | 6-4 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.