Tennis champion Stefanos Tsitsipas has made history, as he became the first Greek to advance into the quarterfinals of a major Grand Slam tournament. The 20-year-old has come of age as he knocked out tennis legend and 3rd ranked Roger Federer 3 sets to 1 (6-7, 7-6, 7-5, 7-6) at the Australian Open in the Rod Laver Arena.