Head to head
3
Hard
4
1
Clay
0
John Isner's wins on the left · Philipp Kohlschreiber's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 2017 | Vienna | Hard | R32 | Philipp Kohlschreiber | 7-6(6) 6-4 |
| 2014 | US Open | Hard | R32 | Philipp Kohlschreiber | 7-6(4) 4-6 7-6(2) 7-6(4) |
| 2014 | Auckland | Hard | QF | John Isner | 6-7(4) 7-6(4) 7-6(5) |
| 2013 | US Open | Hard | R32 | Philipp Kohlschreiber | 6-4 3-6 7-5 7-6(5) |
| 2012 | US Open | Hard | R32 | Philipp Kohlschreiber | 6-4 3-6 4-6 6-3 6-4 |
| 2012 | Canada Masters | Hard | R16 | John Isner | 6-7(3) 6-4 6-4 |
| 2012 | Rome Masters | Clay | R64 | John Isner | 2-6 7-6(3) 6-2 |
| 2010 | Beijing | Hard | R16 | John Isner | 7-6(3) 3-6 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.