Head to head
2
Hard
5
0
Clay
2
John Isner's wins on the left · Alexander Zverev's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (9)
| 2021 | Laver Cup | Hard | RR | Alexander Zverev | 7-6(5) 6-7(6) 1-0(5) |
| 2019 | Laver Cup | Hard | RR | John Isner | 6-7(2) 6-4 1-0(1) |
| 2018 | Tour Finals | Hard | RR | Alexander Zverev | 7-6(5) 6-3 |
| 2018 | Laver Cup | Hard | RR | Alexander Zverev | 3-6 7-6(6) 1-0(7) |
| 2018 | Madrid Masters | Clay | QF | Alexander Zverev | 6-4 7-5 |
| 2018 | Miami Masters | Hard | F | John Isner | 6-7(4) 6-4 6-4 |
| 2017 | Rome Masters | Clay | SF | Alexander Zverev | 6-4 6-7(5) 6-1 |
| 2017 | Miami Masters | Hard | R32 | Alexander Zverev | 6-7(5) 7-6(7) 7-6(5) |
| 2016 | Shanghai Masters | Hard | R64 | Alexander Zverev | 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.