World No 1 Angelique Kerber knocked out of Australian open
Supremely confident American Coco Vandeweghe sweeps aside German 6-2, 6-3

Women’s world number one Angelique Kerber was knocked out of the Australian Open on Sunday in a stunning upset by a supremely confident Coco Vandeweghe, as yet another big seed was sent packing early.
The German, defending a grand slam title for the first time, had no answers to the big-hitting American who powered past her 6-2, 6-3 on Rod Laver Arena to make the quarter-finals in one of the biggest wins of her career.

Top-seeded Kerber was bidding to be the first woman to successfully defend an Australian title since Victoria Azarenka in 2013, but it all went horribly wrong against a player ranked 35.
“It’s really special, to play a number one player in the world on any stage and any round. So I think I believe this is my first number one win. I’ll take that,” said Vandeweghe.