John Isner defeated David Nalbandian 4-6 6-3 2-6 7-6 10-8 in the Australian Open round of 64 on hard. The upset overturned the form book — David Nalbandian came in leading the head-to-head 2–0, defending last year's round of 64. John Isner claimed a first win over David Nalbandian in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-01-10 | Auckland | QF | hard | David Nalbandian | 6-4 7-6(3) |
| 2010-08-15 | Cincinnati Masters | R32 | hard | David Nalbandian | 4-5 RET |
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 46). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About