A quarter-final between two home favourites at the WTA Challenger in Bol, Croatia finished with Ana Konjuh overcoming Tereza Mrdeza in straight sets.
World number 76 Konjuh won 75% of her first serve points while the 297th-ranked Mrdeza served five double faults as she was defeated 6-3 7-6 (7/5).
Japan's Nao Hibino, the highest-ranked player left in the competition at world number 71, broke Stefanie Voegele of Switzerland five times on her way to a 6-2 6-2 victory.
Slovenia's seventh seed Polona Hercog eased past Slovakia's Kristina Kucova 6-4 6-1 to set up a semi-final tie with the fourth seed Hibino.
Mandy Minella of Luxembourg saw off New Zealand's Marina Erakovic in straight sets with a 7-5 6-4 victory in the other quarter-final match.
Source: PA
