Radu Albot defeated John Isner 7-6 3-6 6-3 in the New York round of 16 on hard. The upset overturned the form book — John Isner came in leading the head-to-head 3–0. Radu Albot claimed a first win over John Isner in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-07-02 | Wimbledon | R32 | grass | John Isner | 6-3 6-3 6-4 |
| 2018-05-21 | Lyon | R16 | clay | John Isner | 7-6(3) 6-3 |
| 2018-02-19 | Delray Beach | R32 | hard | John Isner | 5-7 6-3 6-4 |
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 (199 vs 200). ATP, WTA & Challenger.