John Isner defeated Josselin Ouanna 6-2 6-4 in the Belgrade round of 16 on hard. The result followed the form book — John Isner came in leading the head-to-head 1–0. John Isner extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-07-19 | Indianapolis | R32 | hard | John Isner | 6-1 7-6(6) |
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 24). ATP, WTA & Challenger.