Australian Open: Rafael Nadal through to second round with four-set win over Jack Draper

Rafael Nadal won his Australian Open title defence in four sets. Nick Kyrgios was forced to quit the tournament with a knee injury. Jessica Pegula and Coco Gauff won their matches on the first day of the opening Grand Slam of 2014. Shang Juncheng became the youngest player in the men's draw to win an Australian open match. Borna Coric lost in straight sets to Czech player Jiri Lehecka. Novak Djokovic begins his title assault on Tuesday.  Carlos Alcaraz, Naomi Osaka and Naomi Osbourne are absent.