The Transylvania Open is a WTA 250 tournament and is part of the WTA Tour. The competition is conducted on indoor hardcourts at the BTarena.
US Open champion Emma Raducanu was beaten 6-2 6-1 by Ukrainian Marta Kostyuk in the quarterfinal of the Transylvania Open on Friday.
Raducanu came out on top at the end of a three-set encounter with a 4-6, 7-5, 6-1 win against Hercog in the opening round match.