After becoming the world's No.1 tennis pair, it's now Sania VERSUS Martina!

Sania Mirza sailed into the mixed doubles semifinals to set up an important clash against Leander Paes and his Swiss doubles partner Martina Hingis - after both the Indians made the quarterfinals with their respective partners in the Australian Open on Tuesday.

Sania and Swiss legend Martina Hingis who are seeded number one survived a mid-match slump to beat the 12th seeded German-American combine of Ann-Lena Groenefeld and Coco Vandeweghe 6-2 4-6 6-1.

The duo, who are on a record winning streak, will next face the 13th seeded German-Czech pair of Julia Goerges and Karolina Pliskova.

Later, Sania and Croat Ivan Dodig, also seeded top, sailed past the unseeded Kazakh-Pakistani duo of Yaroslava Shvedova and Aisam-Ul-Haq Qureshi 7-5 6-2.

On the other hand, Paes and Sania's women's doubles partner Martina Hingis hammered the American-Dutch pair of Sloane Stephens and Jean-Julien Rojer 6-1 6-2.

As a result, Sania and Paes find themselves pitted against each other in the mixed doubles quarterfinals.

In the junior competition, fifth seeds Karman Thandi and Pranjala Yadlapalli entered the girls' doubles quarterfinals after defeating China's Siqi Cao and Jia Ren 6-4 4-6 (10-2).