The fourth-seeded Djokovic will try for a seventh Miami Open title on Sunday against unseeded 19-year-old upstart Jakub Mensik, who won a thriller decided by a third-set tiebreaker over No. 3 seed ...

(AP) — Novak Djokovic faced a series of obstacles Sunday in the Miami ... But the largest roadblock was the youth and power of 6-foot-4, 19-year-old phenom Jakub Mensik, who outdueled the 37-year-old ...