Nikolay Davydenko defeated Igor Kunitsyn 6-4 6-7 6-4 in the St. Petersburg round of 32 on carpet. The result followed the form book — Nikolay Davydenko came in leading the head-to-head 4–0, defending last year's round of 32. Nikolay Davydenko extended the head-to-head to 5–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-10-11 | Shanghai Masters | R32 | hard | Nikolay Davydenko | 6-4 6-2 |
| 2009-10-05 | Beijing | R32 | hard | Nikolay Davydenko | 6-1 6-7(6) 6-2 |
| 2009-08-16 | Cincinnati Masters | R32 | hard | Nikolay Davydenko | 6-2 1-6 6-3 |
| 2008-05-18 | Poertschach | SF | clay | Nikolay Davydenko | 6-3 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