Novak Djokovic calls Dubai Open triumph one of his best starts

Novak Djokovic set his sights on another marathon run of invincibility after capturing his 79th career title on Saturday. The world number one claimed the Dubai Championships for the fifth time, defeating Stefanos Tsitsipas 6-3, 6-4 in the final. Djokovic is now on an 18-0 winning run this season, and 21-0 overall since late...