Alexander Rumyantsev defeated Andrey Kumantsov 3-6 6-4 6-2 in the Kazakhstan F9 semi-final on hard. The upset overturned the form book — Andrey Kumantsov came in leading the head-to-head 1–0, but Alexander Rumyantsev had been the form player, winning 3 of their last 5 on hard. Alexander Rumyantsev claimed a first win over Andrey Kumantsov in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-08-29 | Russia F8 | SF | clay | Andrey Kumantsov | 6-2 6-3 |
Averages over each player's completed matches in the selected window (1 vs 1). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About