Tennis: Tsitsipas upsets defending champion Federer in the 4th round

Double defending champion Roger Federer lost to Stefanos Tsitsipas in the fourth round of the Australian Open. Federer's chances of winning a third consecutive Australian Open title were ended as the 20-year-old came of age on Rod Laver Arena. The Greek, who was not born when Federer made his professional debut, has rapidly established himself as one of the most exciting up-and-coming talents in the game and backed it up spectacularly with a 6-7 (11-13), 7-6 (7-3), 7-5, 7-6 (7-5) victory to move through to a first Grand Slam quarter-final. Federer had not lost a match at Melbourne Park since a semi-final defeat by Novak Djokovic in 2016, but his often-brilliant forehand was wayward, especially at the big moments, and he failed to take four set points in the second set which might well have changed the outcome.