The unseeded pairing of Sam Stosur and Zhang Shuai have won their first Grand Slam doubles title together, beating defending champions and No. 2-seeded Timea Babos and Kristina Mladenovic 6-3, 6-4 in the final.

China's Zhang Shuai, left, and Australia's Samantha Stosur celebrate a point win over France's Kristina Mladenovic and Hungary's Timea Babos during the women's doubles final at the Australian Open tennis championships in Melbourne, Australia, Friday, Jan. 25, 2019. (Photos: AP) 

Australia's Stosur now owns three major doubles championships, adding this to wins with Lisa Raymond at the 2005 US Open and 2006 French Open. She also won the 2011 US Open singles trophy.

China's Zhang Shuai, left, and Australia's Samantha Stosur, second from left, play France's Kristina Mladenovic, second from right, and Hungary's Timea Babos in the women's doubles final at the Australian Open tennis championships in Melbourne, Australia, Friday, Jan. 25, 2019.

The victory Friday was the 10th in a row for Stosur and China's Zhang. Their most recent loss was against Babos and Mladenovic at last year's US Open.

France's Kristina Mladenovic, left, and Hungary's Timea Babos talk during the women's doubles final against China's Zhang Shuai and Australia's Samantha Stosur at the Australian Open tennis championships in Melbourne, Australia, Friday, Jan. 25, 2019. 

Stosur is the first Australian to win the women's doubles title at the country's Grand Slam tournament since Alicia Molik teamed with Svetlana Kuznetsova of Russia in 2005.