Marinko Matosevic defeated John Isner 6-4 6-4 in the Delray Beach round of 32 on hard. The upset overturned the form book — John Isner came in leading the head-to-head 3–0, defending last year's semi-final, but Marinko Matosevic had been the form player, winning 3 of their last 6 on hard. Marinko Matosevic claimed a first win over John Isner in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-08-10 | Cincinnati Masters | R32 | hard | John Isner | 6-3 7-6(1) |
| 2014-07-21 | Atlanta | QF | hard | John Isner | 7-6(8) 6-4 |
| 2014-05-04 | Madrid Masters | R32 | clay | John Isner | 7-6(9) 6-7(5) 7-5 |
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 (160 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About