Reigning Wimbledon champion Petra Kvitova and Slovakia's Magdalena Rybarikova advanced to the WTA New Haven hardcourt tournament final Friday with straight-set triumphs.
Fourth-ranked Kvitova fired 11 aces in defeating Australia's Samantha Stosur 6-3, 6-1 while Rybarikova hit seven aces in a 6-2, 6-4 triumph over Italy's Camila Giorgi at the US Open hardcourt warm-up event.
Second seed Kvitova, the 2012 New Haven winner who lost to Simona Halep in last year's final, will be the third seed at the US Open.
Rybarikova, ranked 30 spots below her rival at 68th, denied Giorgi on all 11 of her break-point chances to win in 83 minutes at the Yale University hardcourts.
Rybarikova, 25, ousted top-seeded Halep on Tuesday.
She is seeking her fifth WTA title in her sixth career final and first of the year. She captured the 2012 and 2013 Washington titles, the 2011 Memphis crown and her first WTA trophy on Birmingham grass in 2009.
Kvitova is hoping for her 13th career crown and second of the year.