Leonard Stakhovsky defeated Richard Muzaev 2-6 7-5 6-3 in the Kazakhstan F2 round of 16 on hard. The upset overturned the form book — Richard Muzaev came in leading the head-to-head 1–0. Leonard Stakhovsky claimed a first win over Richard Muzaev in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-05-09 | Kazakhstan F3 | R32 | hard | Richard Muzaev | 6-4 4-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.