In Australia Open Tennis, Leander Paes and his Swiss partner Martina Hingis today sailed into the quarterfinals of the Mixed Doubles. The Indo-Swiss pair defeated Australian duo of Casey Dellacqua and Matt Reid 6-2, 6-3 in the Round of 16 clash in Melbourne.World No 2 Serena Williams also stormed into the quarter-finals of Women's Singles with a straight-sets 7-5, 6-4 win over 16th seed Czech Barbora Strycova. She will meet Johanna Konta in the quarter-final. In Men's Doubles, American duo Bob and Mike Bryan outclassed unseeded pair of Brian Baker from the US and Nikola Mektic from Croatia 6-3, 7-6 to reach quarter-finals Earlier, top seed in the Women's Singles, Angelique Kerber has been knocked out in the fourth round. Te German, who was the defending champion, was stunned by an unseeded American Coco Vandeweghe, in straight sets 2-6, 3-6.