Adam Chadaj defeated Artem Smirnov 6-1 7-5 in the Poland F9 round of 16 on clay. The upset overturned the form book — Artem Smirnov came in leading the head-to-head 2–0. Adam Chadaj claimed a first win over Artem Smirnov in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-08-21 | Poland F10 | R16 | clay | Artem Smirnov | 7-6(1) 6-2 |
| 2012-02-20 | Ukraine F1 | R32 | hard | Artem Smirnov | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.