Head to head
1
Hard
2
2
Clay
0
John Isner's wins on the left · Stan Wawrinka's on the right · bar lengths share one scale
All meetings (5)
| 2020 | Australian Open | Hard | R32 | Stan Wawrinka | 6-4 4-1 RET |
| 2017 | Rome Masters | Clay | R16 | John Isner | 7-6(1) 6-4 |
| 2011 | Paris Masters | Hard | R64 | John Isner | 6-7(3) 7-5 7-6(5) |
| 2010 | Belgrade | Clay | SF | John Isner | 7-5 7-5 |
| 2009 | Tokyo | Hard | R32 | Stan Wawrinka | 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.