King of clay praises American serve-and-volley specialist as a unique threat to ATP Tour.
But why was the Serb out in public in the 16th, 17th and 18th?
Two-time Australian Open champion inspired by a dynamic veteran.
Former world No. 1 will debut in Sydney.
John Isner issues strong support of world No. 1.
Renata Voracova was allowed in the country for weeks, and even played a tournament in Melbourne this week.
The Aussie has had his share of animosity for Djokovic, but today he spoke in support of him.
