Denis Istomin defeated Jarkko Nieminen 6-7 6-3 6-2 in the Dusseldorf round of 32 on clay. The upset overturned the form book — Jarkko Nieminen came in leading the head-to-head 3–0, defending last year's final. Denis Istomin claimed a first win over Jarkko Nieminen in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-01-09 | Sydney | SF | hard | Jarkko Nieminen | 7-6(12) 6-3 |
| 2011-08-21 | Winston-Salem | R32 | hard | Jarkko Nieminen | 3-6 6-4 6-4 |
| 2011-03-10 | Indian Wells Masters | R128 | hard | Jarkko Nieminen | 2-6 7-5 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 91). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About