Head to head
Rivalry summary
John Isner and Sam Groth met 3 times on the ATP tour between 2016 and 2017. John Isner leads the head-to-head 3–0 against Sam Groth. By surface, Isner leads 2–0 on grass.
1
Hard
0
2
Grass
0
John Isner's wins on the left · Sam Groth's on the right · bar lengths share one scale
All meetings (3)
| 2017 | Newport | Grass | R16 | John Isner | 6-2 6-4 |
| 2017 | Davis Cup WG QF: AUS vs USA | Hard | RR | John Isner | 7-6(5) 6-3 |
| 2016 | Davis Cup WG R1: USA vs AUS | Grass | RR | John Isner | 7-6(2) 6-2 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.