Head to head
2
Hard
3
0
Clay
1
1
Grass
1
Feliciano Lopez's wins on the left · John Isner's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 2016 | Vienna | Hard | R16 | John Isner | 7-6(1) 3-6 7-6(2) |
| 2016 | Australian Open | Hard | R32 | John Isner | 6-7(8) 7-6(5) 6-2 6-4 |
| 2015 | Queen's Club | Grass | R16 | John Isner | 7-6(5) 6-7(9) 7-6(4) |
| 2014 | Shanghai Masters | Hard | R16 | Feliciano Lopez | 6-3 6-4 |
| 2014 | Wimbledon | Grass | R32 | Feliciano Lopez | 6-7(8) 7-6(6) 7-6(3) 7-5 |
| 2012 | Houston | Clay | SF | John Isner | 6-7(5) 7-6(4) 6-3 |
| 2012 | Australian Open | Hard | R32 | Feliciano Lopez | 6-3 6-7(3) 6-4 6-7(7) 6-1 |
| 2011 | Paris Masters | Hard | R16 | John Isner | 6-4 6-2 |
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.