Andrzej Mach defeated Kacper Owsian 4-6 6-1 6-0 in the Poland F5 round of 32 on clay. The upset overturned the form book — Kacper Owsian came in leading the head-to-head 1–0. Andrzej Mach claimed a first win over Kacper Owsian in two meetings, levelling the head-to-head at 1–1.
Mach A. came through in three sets.
Andrzej Mach beat Kacper Owsian 4-6 6-1 6-0. Umpiry, "Andrzej Mach vs Kacper Owsian — Poland F5 Round of 32", https://umpiry.com/match/2008-08-18/mach-vs-owsian-poland-f5-r32?utm_source=cite (as of 18 August 2008).