Ivo Karlovic defeated Nikolay Davydenko 6-7 7-5 6-4 in the Barcelona round of 32 on clay. The upset overturned the form book — Nikolay Davydenko came in leading the head-to-head 7–0, defending last year's semi-final. Ivo Karlovic claimed a first win over Nikolay Davydenko in eight meetings, narrowing the head-to-head to 7–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-09-17 | Metz | QF | hard | Nikolay Davydenko | 6-7(5) 7-6(6) 6-0 |
| 2012-05-06 | Madrid Masters | R64 | clay | Nikolay Davydenko | 7-6(4) 6-3 |
| 2011-01-03 | Doha | QF | hard | Nikolay Davydenko | 6-3 7-5 |
| 2010-01-04 | Doha | QF | hard | Nikolay Davydenko | 7-6(4) 7-6(7) |
| 2009-04-12 | Monte Carlo Masters | R32 | clay | Nikolay Davydenko | 6-4 6-3 |
| 2006-01-16 | Australian Open | R128 | hard | Nikolay Davydenko | 7-5 4-6 3-6 7-5 6-3 |
| 2005-01-03 | Doha | R32 | hard | Nikolay Davydenko | 7-6(7) 6-3 |
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