John Isner defeated Bernard Tomic 6-3 6-2 in the Delray Beach quarter-final on hard. The result followed the form book — John Isner came in leading the head-to-head 2–0, defending last year's round of 32. John Isner extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-02-11 | New York | R16 | hard | John Isner | 7-6(7) 6-4 |
| 2016-03-04 | Davis Cup WG R1: USA vs AUS | RR | grass | John Isner | 6-4 6-4 5-7 7-6(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 (200 vs 199). ATP, WTA & Challenger.