Plus: Kazakhstan's Yulia Putintseva reached her first career WTA semifinal when she beat Czech player Klara Koukalova 6-3, 6-4.
Kerber lost to Francesca Schiavone, 6-1, 6-1.
Who missed the mark in Melbourne?
No. 60 scores 6-0, 6-1 rout to reach final for second straight year. Fourth-seeded Czech beats Barthel 6-3, 6-2.
Beck beats Mayr-Achleitner 6-2, 6-2; Barthel defeats Bertens 6-3, 6-0.
Fourth-seeded Zahlavova Strycova, No. 5 seed Lepchenko, qualifier Larsson all advance; No. 6 seed Vinci falls.
World No. 1 was leading 6-5 when she retired with a viral illness; Muguruza tops No. 2 seed Halep, Jankovic and Errani both out.
No. 5 seed rolls 6-1, 6-2; Barthel, McHale, Scheepers, Friedsam also advance.
The German, ranked No. 61, earned hr third career WTA title.
Barthel defeated Soler-Espinosa, 6-2, 4-6, 7-5, after Scheepers beat Cepelova, 7-5, 6-2.