Ekaterina Makarova loses to Tomas Berdych at the Czech Open . U.S. powers past the 14-time grand slam winner in straight sets . The Australian had lost 46 straight times to Nadal . Novak Djokovic , trying for a fifth Australian Open crown , meets big-serving Canadian Milos Raonic , and defending champion Stan Wawrinka confronts U.S. Open finalist Kei Nishikori . Maria Sharapova , Ekaterina Makarova advance to semifinals .
Ekaterina Makarova loses to Tomas Berdych at the Czech Open . U.S. powers past the 14-time grand slam winner in straight sets . The Australian had lost 46 straight times to Nadal . Maria Sharapova , Ekaterina Makarova advance to semifinals .