For Aryna Sabalenka and Iga Swiatek, their battle for No.1 is more than a rivalry -- it’s a driving force behind their ...

For Aryna Sabalenka and Iga Swiatek, their battle for No.1 is more than a rivalry -- it’s a driving force behind their evolution and the rise of women’s tennis.

There are 32 matches at the Australian Open on January 12, highlighted by No. 46-ranked Katerina Siniakova versus No. 2 Iga ...