Filip Duda defeated Ondrej Krstev 3-6 6-2 6-0 in the Czech Republic F2 round of 32 on clay.
Duda F. came through in three sets.
Filip Duda beat Ondrej Krstev 3-6 6-2 6-0. Umpiry, "Filip Duda vs Ondrej Krstev — Czech Republic F2 Round of 32", https://umpiry.com/match/2017-05-22/duda-vs-krstev-czech-republic-f2-r32?utm_source=cite (as of 22 May 2017).