Roman Nashatyrkin defeated Aliaksandr Prudnikau 6-3 6-4 in the Turkey F39 q16 on hard. The upset overturned the form book — Aliaksandr Prudnikau came in leading the head-to-head 1–0. Roman Nashatyrkin claimed a first win over Aliaksandr Prudnikau in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-02-07 | M15 St. Petersburg 2 | Q32 | hard | Aliaksandr Prudnikau | 6-4 2-6 10-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.