Iga Swiatek was pushed to the physical limit at the United Cup, but the World No.2 says she'll be fit and firing for the Australian Open.
The WTA season kicked off with Polina Kudermetova breaking into the Top 100, Yulia Putintseva setting a new career high and Naomi Osaka rejoining the Top 50.
The world No. 1 continued her remarkable streak in Australia, while injury retirements spoiled matches just a week into the ...