Ernests Gulbis defeated Christian Harrison 6-1 2-6 6-3 in the Tenerife 1 CH qualifying round 2 on hard. The upset overturned the form book — Christian Harrison came in leading the head-to-head 2–0. Ernests Gulbis claimed a first win over Christian Harrison in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-08-27 | US Open | Q1 | hard | Christian Harrison | 3-6 6-2 6-4 |
| 2018-08-21 | US Open | Q128 | hard | Christian Harrison | 3-6 6-2 6-4 |
Averages over each player's completed matches in the selected window (6 vs 33). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About