In 1998, Martina Hingis won all four of the Grand Slam women's doubles titles, only the fourth in women's tennis history to do so, (the Australian Open with Mirjana Lucic and the other three events with Novotná), and Martina Hingis became only the third woman to simultaneously hold the No. 1 ranking in both singles and doubles. Martina Hingis also retained her Australian Open singles title by beating Conchita Martínez in straight sets in the final.