Viktor Troicki defeated Denis Istomin 6-1 6-4 in the Kuala Lumpur round of 16 on hard. The upset overturned the form book — Denis Istomin came in defending last year's round of 16. Viktor Troicki extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-02-05 | Sofia | R16 | hard | Viktor Troicki | 7-6(4) 1-6 7-6(5) |
| 2010-08-22 | New Haven | SF | hard | Denis Istomin | 7-6(10) 3-6 6-2 |
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.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About