Jakub Mensik has named Novak Djokovic the tennis GOAT after beating his idol and mentor in the Miami Open final. The highly-rated Czech teenager defeated the tennis icon in straight sets to claim his first WTA 1000 title.

(Reuters) -Nineteen-year-old Czech Jakub Mensik beat his childhood idol Novak Djokovic 7-6(4) 7-6(4) in an upset for the ages on Sunday, claiming his first ATP title at the Miami Open as he denied the former number one his bid for a milestone 100th.

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 Serbian in two tiebreakers 7-6 (4), 7-6 (4) to win hi