Viktor Kostin defeated Karol Krawczynski 6-1 6-4 in the Poland F6 qualifying round of 64 on clay. The upset overturned the form book — Karol Krawczynski came in leading the head-to-head 1–0. Viktor Kostin claimed a first win over Karol Krawczynski in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-08-31 | Poland F4 | Q32 | clay | Karol Krawczynski | 6-4 1-0 |
Averages over each player's completed matches in the selected window (1 vs 1). ATP, WTA & Challenger.
wins 56% of points on serve vs Krawczynski K.
wins 58% of points on serve vs Kostin V.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About