The 4 quarter finals:
| Madison Keys (14, US) v Ashleigh Barty (8, Aus) |
| Simona Halep (3, Rom) v Amanda Anisimova (US) |
| Sloane Stephens (7, US) v Johanna Konta (26, GB) |
| Marketa Vondrousova (Cze) v Petra Martic (31, Cro |
The semi finals will be between the winners of the first two quarter finals and the winners of the last two.
The numbers shown are the seeded numbers which are also the current rankings. They are based on the results of the last 12 months. If one looks at the Porsche Race rankings (based on just the current season to date) it shows a rather different position:
Madison Keys 26 / Ashleigh Barty 6
Simona Halep 7 / Amanda Anisimova 29
Sloane Stephens 21 / Johanna Konta 13
Marketa Vondrousova 16 / Petra Martic 22