John Isner defeated Teymuraz Gabashvili 7-6 6-4 in the Madrid Masters round of 64 on clay. The upset overturned the form book — Teymuraz Gabashvili came in leading the head-to-head 2–1. John Isner narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-05-23 | Roland Garros | R32 | clay | John Isner | 7-6(7) 4-6 2-6 6-4 6-2 |
| 2015-04-06 | Houston | R16 | clay | Teymuraz Gabashvili | 6-2 7-6(2) |
| 2011-02-21 | Delray Beach | R32 | hard | Teymuraz Gabashvili | 6-4 5-7 7-6(13) |
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.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About