Marcel Zielinski defeated Jan Sadzik 6-3 6-2 in the M15 Lodz 1 qualifying round of 64 on clay. The result followed the form book — Marcel Zielinski came in ranked #578, leading the head-to-head 1–0. Marcel Zielinski extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-07-30 | M25 Koszalin | R16 | clay | Marcel Zielinski | 1-6 3-6 |
Averages over each player's completed matches in the selected window (52 vs 3). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About