Jack Sock defeated Ernests Gulbis 6-4 6-4 6-4 in the Wimbledon round of 128 on grass. The upset overturned the form book — Ernests Gulbis came in leading the head-to-head 2–0, defending last year's round of 128. Jack Sock claimed a first win over Ernests Gulbis in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-10-22 | Basel | R32 | hard | Ernests Gulbis | 7-5 6-4 |
| 2018-10-15 | Stockholm | QF | hard | Ernests Gulbis | 4-6 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.