Roger Federer claims his 20th grand slam title after defeating Marin Cilic in the 2018 Australian Open final

Roger Federer wins the Australian Open after beating Marin Cilic 6-2, 6-7, 6-3, 3-6, 6-1! The tennis star has become the first man ever to win 20 Grand Slam titles. Congratulations to Roger Federer!!