Piotr Matuszewski defeated Filip Kolasinski 7-5 3-6 6-2 in the M25 Poznan 1 round of 32 on clay. The upset overturned the form book — Filip Kolasinski came in leading the head-to-head 1–0. Piotr Matuszewski claimed a first win over Filip Kolasinski in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-08-21 | M25 Poznan 1 | R32 | clay | Filip Kolasinski | 6-2 4-6 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.