Australia, Feb 01 (ANI): Serena Williams posed with her trophy after she won the 19th Grand Slam in Melbourne, with a victory over Maria Sharapova in the final of the Australian Open. It was Williams' sixth title at Melbourne Park and it moved her into a tie with fellow American Helen Wills Moody in third on the all-time list after she joined Martina Navratilova and Chris Evert on 18 at last year's US Open. William's had been battling a cold and cough the entire tournament, so was reluctant to head out and celebrate after her win. Williams said she hopes she can be a good role model for children. Meanwhile, five times grand slam singles winner Martina Hingis won her second Australian Open mixed doubles title as she teamed with India's Leander Paes to beat last year's winners France's Kristina Mladenovic and Canada's Daniel Nestor 6-4 6-3. It was the first time the pair, who were seeded seventh, had played together at a grand slam.