Top-seeded Novak Djokovic has reached the quarterfinals of the Adelaide International where he will face Denis Shapovalov. Djokovic defeated Quentin Halys 7-6 (3) 7-6 (5) on Thursday, and Canadian Shapovalov beat Roman Safiullin 6-4, 6-3 to advance. Djokovic and other top players are using this event as a warm-up for the Australian Open beginning Jan.…