Sergei Krotiouk defeated Vladimir Karusevich 6-4 4-6 6-2 in the Russia F7 round of 32 on clay. The upset overturned the form book — Vladimir Karusevich came in leading the head-to-head 2–0. Sergei Krotiouk claimed a first win over Vladimir Karusevich in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-02-20 | Russia F5 | R32 | hard | Vladimir Karusevich | 6-3 6-4 |
| 2008-08-25 | Russia F5 | F | clay | Vladimir Karusevich | 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.