Robin Haase defeated John Isner 6-2 6-7 7-5 in the Basel round of 16 on hard. The upset overturned the form book — John Isner came in defending last year's round of 16. Robin Haase extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-05-19 | Nice | R16 | clay | Robin Haase | 6-4 1-6 7-5 |
| 2011-01-10 | Auckland | R16 | hard | John Isner | 3-6 7-6(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 200). ATP, WTA & Challenger.