Barty is the current world leader, 321 points ahead of Pliskova in second place. Pliskova must reach the semi-finals to have a chance to pass and must reach a game longer than Barty.
Barty today beat Frenchman Caroline Garcia by 4-6.6-4-6-1 in the second round and got revenge for the final loss two years ago.
- I made a couple of changes in the second set. It was important that I took a little more initiative on my backhand page, says Barty according to WTA.
Karolina Pliskova beat young Amanda Anisimova with 6-3.6-3.