Head to head
1
Hard
1
Martin Klizan's wins on the left · John Isner's on the right · bar lengths share one scale
All meetings (2)
| 2014 | Australian Open | Hard | R128 | Martin Klizan | 6-2 7-6(6) RET |
| 2012 | Winston-Salem | Hard | R32 | John Isner | 4-6 6-3 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.