Novak Djokovic didn't have the comeback he dreamed of, that's for sure. While he hoped to emulate Roger Federer and Rafael Nadal in 2017, the Serb would fall in the fourth round to unseeded Hyeon Chung.

Chung, who idolized Djokovic, moved into the semifinals with a win over fellow unseeded dark horse Tennys Sandgren.

Djokovic's team includes big talents like Andre Agassi and Radek Stepanek. How will he build from here?