Elise Mertens and Aryna Sabalenka won their maiden Grand Slam title in the US Open women's doubles.

The fourth seeds beat Australian Ashleigh Barty and Belarusian Victoria Azarenka 7-5 7-5 in one hour and 36 minutes on Arthur Ashe Stadium.

Belgian Mertens and Belarusian Sabalenka won the titles at Indian Wells and Miami earlier this year.

Barty, the French Open singles champion, won the US doubles title last year with American Coco Vandeweghe.