John Isner defeated Viktor Troicki 7-6 7-6 in the Monte Carlo Masters round of 32 on clay. The upset overturned the form book — Viktor Troicki came in leading the head-to-head 5–2. John Isner narrowed the head-to-head to 5–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-10-09 | Shanghai Masters | R16 | hard | Viktor Troicki | 6-4 7-6 |
| 2017-08-14 | Cincinnati Masters | R64 | hard | John Isner | 7-6 6-4 |
| 2015-06-15 | Queen's Club | QF | grass | Viktor Troicki | 7-6 6-3 |
| 2011-08-08 | Canada Masters | R32 | hard | Viktor Troicki | 6-4 3-6 6-2 |
| 2011-07-31 | Washington | QF | hard | John Isner | 7-6 3-6 6-1 |
| 2010-03-05 | Davis Cup WG R1: SRB vs USA | RR | clay | Viktor Troicki | 7-6 6-7 7-5 6-4 |
| 2009-09-28 | Bangkok | QF | hard | Viktor Troicki | 7-6 6-2 |
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About