Fabio Fognini defeated John Isner 6-4 7-6 in the Atp Cup round robin on hard. The upset overturned the form book — John Isner came in leading the head-to-head 2–0. Fabio Fognini claimed a first win over John Isner in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-08-15 | Cincinnati Masters | R64 | hard | John Isner | 6-3 6-2 |
| 2012-10-21 | Valencia | R32 | hard | John Isner | 6-3 6-7(4) 7-5 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 118). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About