John Isner defeated Federico Delbonis 6-3 6-1 7-5 in the US Open round of 128 on hard. The upset overturned the form book — Federico Delbonis came in leading the head-to-head 1–0, defending last year's round of 128. John Isner claimed a first win over Federico Delbonis in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-05-18 | Nice | QF | clay | Federico Delbonis | 6-4 5-7 7-6(6) |
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 (63 vs 91). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About