Djokovic embarks on "Mission 21"

Djokovic embarks on "Mission 21"

Djokovic rested after the Olympic Games and this will be his first match in a month.

Novak is embarking on a "mission" 21 - 21st Grand Slam title in his career, along with completing a Calendar Slam.

The first obstacle is a young Dane, with whom he trained several times.

Rune has won three challengers in a row and is in a series of 13 wins.

Novak and Holger have not met so far.