ORDER OF PLAY
Play starts at noon
After two Men's singles matches
Not before 4pm
Yulia PUTINTSEVA (KAZ)  or Svetlana KUZNETSOVA (RUS) v
Andrea PETKOVIC (GER)
After Men's Singles match
Not before 9pm
Saisai ZHENG (CHN) or Allie KIICK (USA) v
Magda LINETTE (POL) or Donna VEKIC (CRO) 
JOHN A HARRIS GRANDSTAND
Yulia PUTINTSEVA (KAZ)  v Svetlana KUZNETSOVA (RUS) 2-6. 2-2
Saisai ZHENG (CHN) v Allie KIICK (USA)
Xinyun HAN (CHN) / Darija JURAK (CRO)  v Belinda BENCIC (SUI) / Anhelina KALININA (UKR)
Ysaline BONAVENTURE (BEL) / Fanny STOLLAR (HUN) v Xinyun HAN (CHN) / Darija JURAK (CRO)  or Belinda BENCIC (SUI) / Anhelina KALININA (UKR)
Magda LINETTE (POL) v Donna VEKIC (CRO)  0-3
Svetlana Kuznetsova and Yulia Putintseva are level at a win apiece in previous encounters. The Kazakh's triumph in St. Petersburg last year came after a loss in Cincinnati earlier in 2017.
Zheng Saisai and Allie Kiick meet for the first time, as do Magda Linette and Donna Vekic.
Svetlana Kuznetsova has not dropped a set in Washington this week - only Zheng Saisai can match that.
Andrea Petkovic seeks to reach her second final in Washington, having previously lost the showpiece to Magdalena Rybarikova in 2013.
Svetlana Kuznetsova also seeks to repeat a final showing, the Russian taking the title in 2014 with a victory over Kurumi Nara.