who has won the mens singles title in the australian open tennis tournament
Roger Federer
title: 2018 Australian Open – Men's Singles text: 2018 Australian Open – Men's Singles Roger Federer was the defending champion and successfully defended his title, defeating Marin Čilić in the final, 6–2, 6–7, 6–3, 3–6, 6–1. It was Federer's 20th Grand Slam singles title and record-equalling sixth Australian Open men's singles title (tied with Roy Emerson and Novak Djokovic). With the win, Federer became the first male player to win at least six titles at two Grand Slam tournaments (six at the Australian Open and eight at Wimbledon). Federer became the oldest man to win a Grand Slam singles title in the Open era since Ken Rosewall in title: 2017 Australian Open – Men's Singles text: the win, Federer became the first male player to win at least five titles at three Grand Slam tournaments (five at the Australian Open, seven at Wimbledon and five at the US Open). The win was also Federer's first title on the ATP tour in over 12 months; his last win was at Basel on 1 November 2015. This was the first Grand Slam tournament in which Andy Murray started as World No. 1 and top seed. Murray retained the top ranking despite losing to Mischa Zverev in the fourth round, because second seeded Djokovic needed to win the tournament title: 2017 Australian Open – Men's singles final text: 2017 Australian Open – Men's singles final The 2017 Australian Open Men's Singles final was the championship tennis match of the Men's Singles tournament at the 2017 Australian Open. It was contested between Roger Federer and Rafael Nadal, ranked 17th and 9th in the world respectively. It was their record ninth meeting in a Grand Slam final in their rivalry, and their 1st meeting in a Grand Slam final since the 2011 French Open. In a rematch of the 2009 Australian Open final, which Nadal won in 5 sets, Roger Federer won the duel in 5 sets, beating Nadal for title: 2017 Australian Open Series text: 2017 Australian Open Series In tennis, the 2017 Australian Open Series, (sometimes known as the 'Australian Summer of Tennis' which includes a group of hard court tournaments that starts on July 1, 2017 and concludes with the men's singles final at the Australian Open on January 29, 2017. France vs. United States Johanna Konta was the defending champion,but chose not to participate this year Viktor Troicki was the two-time defending champion, but lost in the semifinals to Gilles Müller. Müller went on to win his first ATP title, defeating Daniel Evans in the final, 7–6, 6–2. Alizé Cornet was the title: 2019 Australian Open – Men's Singles text: 2019 Australian Open – Men's Singles Roger Federer is the two-time defending champion. Federer will become the oldest man ever to win the Australian Open if he wins the title. Currently, Ken Rosewall remains the oldest Australian Open champion, at 37 years and 2 months, a record that remains unbeaten since 1972. Either Federer or Novak Djokovic can set a new all-time record by winning a seventh Australian Open title. Federer could become only the second man in the Open Era (after Djokovic in 2011, 2012 and 2013) to win three consecutive Australian Open titles. Rafael Nadal can become the