Djokovic lets loose, finds groove in 3rd-round win

Novak Djokovic beat Kei Nishikori 6-7 (4), 6-3, 6-3, 6-2 on Saturday to reach the Round of 16 at the US Open.

source https://www.espn.com/tennis/story/_/id/32147142/novak-djokovic-lets-emotions-show-third-round-victory-us-open