Filip Horansky defeated Marek Semjan 6-4 6-2 in the Slovak Republic F4 qualifying round on clay. The upset overturned the form book — Marek Semjan came in leading the head-to-head 1–0. Filip Horansky claimed a first win over Marek Semjan in two meetings, levelling the head-to-head at 1–1.
Horansky F. took it in straight sets.
Filip Horansky beat Marek Semjan 6-4 6-2. Umpiry, "Filip Horansky vs Marek Semjan — Slovak Republic F4 Qualifying Round", https://umpiry.com/match/2013-08-05/horansky-vs-semjan-slovak-republic-f4-qf?utm_source=cite (as of 5 August 2013).