Nick Kyrgios responds to Novak Djokovic's offer "that would win him five Grand Slams"

Although he spoke ill of me for years, he supported me," Djokovic said at Wimbledon last year. "When I was going through the most difficult period, he was one of the few people to speak publicly on my behalf. I'm very grateful."

Djokovic survived a shock at the Banja Luka Open on Wednesday. After losing the first set to 18-year-old world number 87 Luca van Asshe, the veteran battled back to win 6-7 6-3 6-2.

However, Djokovic, who played with an elbow injury, was once again forced to deny that he is exaggerating the extent of his fitness problem. He fired back at questions over his elbow saying: "I leave doubt to these people, let them doubt. Only my injuries are in question. When other players are injured then they are the victims, but when it's me, I pretend. It's very interesting. I don't feel like I need to prove anything to anyone.

"I have the MRI, ultrasound and everything else, both two years ago and now. Whether I post this in my documentary or on social media depends on how I feel. May -maybe I will, maybe I won't."