Novak Djokovic: It's one of the nicest moments in my career

*Sydney:* An emotional Novak Djokovic overpowered long-time rival Rafael Nadal and led Serbia to victory in the inaugural ATP Cup on Sunday, capping a perfect build up to his Australian Open title defence. The World No. 2 blasted the top-ranked Spaniard off court 6-2, 7-6 after World No. 10 Roberto Bautista Agut caned Serbia's...