Djokovic eases into Shanghai Masters fourth round to face Safiullin who beat Tiafoe

SHANGHAI (AP) — Pursuing a 100th career title, Novak Djokovic had an easier time in his second match at the Shanghai Masters in ousting Flavio Cobolli 6-1, 6-2 on Tuesday.Djokovic clinched the match with his 19th winner, placing a forehand behind the Italian who was racing back across the baseline after being pushed wide by the service.The fourth-seeded Serb did not allow a break point in the third round, after previously being stretched to two tiebreakers and saving set points against Alex Michelsen of the United States.“Cobolli was evidently exhausted after last night’s match,” Djokovic said of his opponent, who had advanced by beating three-time Grand Slam champion Stan Wawrinka. “I think that has taken a toll, physically, on him today.”Djokovic, who has won four of his 99 titles in Shanghai, next faces 61st-ranked Roman Safiullin who upset Frances Tiafoe 5-7, 7-5, 7-6 (5).Tiafoe congratulated Safiullin then walked off the court aiming expletives at the umpire, who had…