CAROLINE WOZNIACKI AND and Jelena Ostapenko ended their losing streaks in stifling heat on day two of the US Open and Angelique Kerber also made it into the second round.
Wozniacki and Ostapenko had not won since Wimbledon, but the grand slam champions advanced at the expense of Sam Stosur and Andrea Petkovic as temperatures soared at Flushing Meadows.
Kerber, aiming for back-to-back major titles following her triumph on the grass at the All England Club was a 7-6 (7-5) 6-3 winner over Margarita Gasparyan on a day which saw the heat rule implemented for both men and women.
Petra Kvitova was another major winner who advanced in New York at the expense of Yanina Wickmayer, but a struggling CoCo Vandeweghe – a semi-finalist in her homeland last year – was beaten by the unseeded Kirsten Flipkens.
Sixth seed Caroline Garcia brushed aside Johanna Konta in straight sets, and Naomi Osaka, the in-form Kiki Bertens and Daria Kasatkina were among the other seeds to go through in the afternoon session on Tuesday, while 2006 champion Maria Sharapova prevailed.
