Jan Lennard Struff defeated John Isner 7-6 4-6 7-5 in the Atp Cup round robin on hard. The upset overturned the form book — John Isner came in leading the head-to-head 4–0. Jan Lennard Struff claimed a first win over John Isner in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-08-26 | US Open | R64 | hard | John Isner | 6-3 7-6(4) 7-6(5) |
| 2016-10-31 | Paris Masters | R16 | hard | John Isner | 6-4 6-7(4) 6-3 |
| 2016-10-24 | Vienna | R32 | hard | John Isner | 6-7(1) 6-3 6-4 |
| 2014-08-25 | US Open | R64 | hard | John Isner | 7-6(5) 6-4 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About
Averages over each player's completed matches in the selected window (200 vs 63). ATP, WTA & Challenger.
The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.