John Isner defeated Mikhail Kukushkin 6-7 7-6 6-3 7-6 in the Roland Garros round of 64 on clay. The result followed the form book — John Isner came in leading the head-to-head 3–1, defending last year's round of 32. John Isner extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-07-01 | Wimbledon | R64 | grass | Mikhail Kukushkin | 6-4 6-7(3) 4-6 6-1 6-4 |
| 2018-10-29 | Paris Masters | R32 | hard | John Isner | 6-3 6-7(2) 7-6(1) |
| 2017-03-06 | Indian Wells Masters | R64 | hard | John Isner | 7-6(0) 7-6(6) |
| 2014-08-17 | Winston-Salem | R16 | hard | John Isner | 6-1 7-6(3) |
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 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About