Sam Stosur (R) and Shuai Zhang en route to victory over Anastasia Pavlyuchenkova and Anastasija Sevastova in the US Open doubles quarterfinals; Getty Images

Sam into US Open doubles semifinals

Former singles and doubles champion Sam Stosur is through to the women’s doubles semifinals at the US Open with China’s Shuai Zhang.

The pair beat Anastasija Sevastova and Anastasia Pavlyuchenkova, also unseeded, 6-2 6-3 in one hour and 16 minutes on Court 17.

They will face No.2 seeds Timeas Babos and Kristina Mladenovic of France in the last four, with fellow Aussie Ash Barty and American Coco Vandeweghe also through to the semifinals on the other side of the draw.

Stosur, the 2005 doubles champion and 2011 singles champion at Flushing Meadows, is trying to win her seventh major title.

Australia’s John Peers, also partnering Zhang, fell just short of the mixed doubles final.

Peers and Zhang went down 2-6 6-4 [10-7] to Poland’s Alicja Rosolska and Nikola Mektic of Croatia.