Martin Klizan advanced when John Isner retired 6-2 7-6 in the Australian Open round of 128. Martin Klizan claimed a first win over John Isner in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-08-19 | Winston-Salem | R32 | hard | John Isner | 4-6 6-3 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 200). ATP, WTA & Challenger.