TOURNAMENTS CHAMPIONS BRISBANE INTERNATIONAL Karolina Pliskova def. Alize Cornet  6-0, 6-3 Grigor Dimitrov def. Kei Nishikori 6-2, 2-6, 6-3 QATAR EXXONMOBIL OPEN Novak Djokovic def. Andy Murray 6-3, 5-7, 6-4…