Novak Djokovic fell in the final round of the Miami Open to 19-year-old Jakub Mensik in straight sets, 7-6, 7-6, on Sunday. Mensik, playing in his first final, earned his spot after defeating No. 3 seed Taylor Fritz in the semifinals and became the second-youngest champion in tournament history, per ATP Tour.

Jakub Mensik used his length to shrink the court, erasing Novak Djokovic's ability to find winners in a shock upset for his first career tennis title Sunday at the Miami Open.

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