John Isner defeated Mardy Fish 7-6 4-6 7-6 in the Madrid Masters round of 64 on clay. The upset overturned the form book — Mardy Fish came in leading the head-to-head 3–0, defending last year's round of 32. John Isner claimed a first win over Mardy Fish in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-07-18 | Atlanta | F | hard | Mardy Fish | 3-6 7-6(6) 6-2 |
| 2010-07-19 | Atlanta | F | hard | Mardy Fish | 4-6 6-4 7-6(4) |
| 2009-02-09 | San Jose | R16 | hard | Mardy Fish | 6-2 6-7(4) 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 (200 vs 111). ATP, WTA & Challenger.