After struggling past Patricia Mayr-Achleitner in the previous round, Wickmayer moved up a gear against Meusburger. The Belgian set the tone early on, rattling off the first four games and, despite a slight wobble towards the end of the opening set, eventually wrapped up the match, 63 62.
"I was very happy about my match today," Wickmayer said. "I played very well and did what I had to do. I'm very excited about the semis and I'll try to prepare well."
The victory takes Wickmayer into her third semifinal of the season and here she will face another unseeded opponent, Mandy Minella.
While Minella may sit 58 places below her opponent in the rankings, and will be appearing in her first WTA semifinal, she is unlikely to be daunted by the occasion after taking out two seeds already this week. The latest upset came against No.8 seed Johanna Larsson, whom she defeated, 16 62 62 to become the first player from Luxembourg to reach the last four at a WTA event since Anne Kremer at Seoul in 2004 .
No.3 seed Pervak defeated qualifier Chichi Scholl, 64 61, while Cornet, who is yet to drop a set this week, was even more impressive in swatting aside Estrella Cabeza Candela, 61 62, for her 14th win since the end of April.
"It's my third semifinal here so I think I really like the tournament and play well here," Cornet said. "Estrella has a really good game, but I also think it suits my style and against her I played the best I have all week."
Cornet's only previous meeting with Pervak came in Bad Gastein 12 months ago and she is out for revenge on Saturday.
"Unfortunately, I lost against Pervak last year in the first round. It was a very tight match and she was playing good and I was not so confident. This year is different, I'm playing better so I know it's going to be an even tougher match and we will see who wins," Cornet added.