Ernests Gulbis defeated John Isner 6-4 4-6 6-4 in the Vienna round of 16 on hard. Ernests Gulbis extended the head-to-head to 4–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-10-15 | Stockholm | SF | hard | Ernests Gulbis | 1-6 6-3 6-3 |
| 2015-10-26 | Basel | R32 | hard | John Isner | 6-3 6-4 |
| 2014-03-06 | Indian Wells Masters | QF | hard | John Isner | 7-6(4) 7-6(3) |
| 2013-10-21 | Valencia | R32 | hard | John Isner | 7-6(4) 7-6(2) |
| 2013-04-14 | Monte Carlo Masters | R64 | clay | Ernests Gulbis | 4-6 6-2 6-3 |
| 2008-06-23 | Wimbledon | R128 | grass | Ernests Gulbis | 7-5 7-5 6-7(3) 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 (200 vs 200). ATP, WTA & Challenger.