Peter Heller defeated Maciej Smola 6-0 6-2 in the Czech Republic F1 qualifying round on clay.
Heller P. took it in straight sets.
Peter Heller beat Maciej Smola 6-0 6-2. Umpiry, "Peter Heller vs Maciej Smola — Czech Republic F1 Qualifying Round", https://umpiry.com/match/2018-05-14/heller-vs-smola-czech-republic-f1-qf?utm_source=cite (as of 14 May 2018).