John Isner defeated Borna Coric 6-4 6-4 6-3 in the Davis Cup WG QF: USA vs CRO round robin on hard. The upset overturned the form book — Borna Coric came in leading the head-to-head 1–0, but John Isner had been the form player, winning 1 of their last 4 on hard. John Isner claimed a first win over Borna Coric in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-08-21 | Winston-Salem | R16 | hard | Borna Coric | 7-5 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
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.