"After much thought I have decided to dedicate my future to my family," Norman said.
There are only two singles spots left to claim for the year-ending event.
For $12 million you can live like Serena—tennis court not included.
Only two spots are left at the inaugural event in Milan
Aussie will pull plug on 13-year career in Melbourne.
Uncle Toni to host adult tennis camp in November.
Grand Slam champions join world No. 1 Rafael Nadal in field.