John Isner defeated Dudi Sela 3-6 6-1 7-6 in the Delray Beach round of 16 on hard. The result followed the form book — John Isner came in leading the head-to-head 3–1, defending last year's semi-final. John Isner extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-07-03 | Wimbledon | R64 | grass | Dudi Sela | 6-7(5) 7-6(5) 5-7 7-6(5) 6-3 |
| 2016-07-25 | Canada Masters | R64 | hard | John Isner | 4-6 6-3 6-2 |
| 2014-07-21 | Atlanta | F | hard | John Isner | 6-3 6-4 |
| 2011-08-21 | Winston-Salem | R32 | hard | John Isner | 7-6(3) 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.