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.

Phenom Jakub Mensik, 19, upset Novak Djokovic in a rain-delayed Miami Open final, keeping Djokovic at 99 career titles.

Making matters worse, Mensik is a powerful player, which presents challenges for the gaining Djokovic. Mensik tallied 14 aces to Djokovic's seven. Additionally, the Czech teen won