Zdenek Derkas defeated Pavel Staubert 6-7 6-2 7-5 in the Czech Republic F4 round of 32 on clay. The upset overturned the form book — Pavel Staubert came in leading the head-to-head 1–0. Zdenek Derkas claimed a first win over Pavel Staubert in two meetings, levelling the head-to-head at 1–1.
Derkas Z. came through in three sets.
Zdenek Derkas beat Pavel Staubert 6-7(4) 6-2 7-5. Umpiry, "Zdenek Derkas vs Pavel Staubert — Czech Republic F4 Round of 32", https://umpiry.com/match/2015-06-22/derkas-vs-staubert-czech-republic-f4-r32?utm_source=cite (as of 22 June 2015).