![Serena Williams](/web/20170123115732im_/http://www.smh.com.au/content/dam/images/g/t/w/t/2/t/image.related.landscape.460x307.gtwt3i.png/1485161396112.jpg)
Serena's title to lose? First she must beat a player for the first time
The players at the top of the tree in the women’s game have been falling around her - at a rapid rate. Simona Halep was first to drop off, even before most spectators were comfortable in their seats on the opening day.