TORONTO — Top-ranked Novak Djokovic won his fourth Rogers Cup title Sunday, beating Japan’s Kei Nishikori 6-3, 7-5 after a short rain delay. Djokovic also won the hardcourt event that rotates between Toronto and Montreal 2007, 2011 and 2012. Ivan Lendl holds the tournament record with six titles. The 29-year-old Serb has seven victories this