Novak Djokovic showed no signs of an injury that might derail his Australian Open campaign when he beat unseeded American Sebastian Korda 6-7 (8), 7-6 (3), 6-4 Sunday to win the Adelaide International. Djokovic worried Open organizers when he said after his semifinal in Adelaide against Daniil Medvedev that he had been troubled by a tight hamstring. He said the injury eased as the match progressed. If there had been any lingering issue, it likely would have been exposed in Sunday’s marathon final that stretched over more than three hours and finished with Djokovic claiming his 92nd career singles title. He also took his second Adelaide title 16 years after his first; he won the tournament in 2007, aged 19. “I hope everyone enjoyed the show tonight, it’s been an amazing week,” Djokovic said. “Seb’s had an amazing tournament and put in an amazing effort today. “I think he was closer to victory at times today than I was. It was only a couple of shots, a couple of points.” Earlier, second-seeded Aryna Sabalenka claimed her 11th WTA Tour singles title but her first in almost two years when she overcame qualifier Linda Noskova 6-2 7-6 (4) in the women’s final. In doing so she ended an extraordinary run by the 18-year-old Noskova who beat third-seeded Daria Kasatkina and former Australian Open champion Viktoria Asarenka in the main draw on the way to her first final.