Answer: Novak Djokovic
Notes: Novak Djokovic from Serbia defeated Rafael Nadal to win his 7th Australian Open Men's Singles title at Melbourne on 28th January 2019. The resurgent world No.1 outplayed the second-ranked Nadal 6-3, 6-2, 6-3 in a largely one-sided match. With this, Djokovic has surpassed American legend Pete Sampras to elevate himself to outright third on the all-time Grand Slam title leaderboard. Earlier, In 2019 Women's Singles, Japan's Naomi Osaka clinched her first-ever Australian Open Grand Slam Singles title in Melbourne. With this, Osaka became the first Asian player to achieve the world number one ranking.
