Novak Djokovic was rarely troubled by dustin Brown .
Novak Djokovic was rarely barely raised a sweat , cruising into the second round with an ominous display for rivals looking for any early - season weaknesses from the Serb after his dominant 2015 .
Novak Djokovic was rarely troubled by dustin Brown and barely raised a sweat , cruising into the second round with an ominous display for rivals looking for any early - season weaknesses from the Serb after his dominant 2015 .