The incident occurred during Djokovic's epic fourth round match against Kevin Anderson on Tuesday, which the Serb won 6-7 (8), 6-7 (8), 6-1, 6-4, 7-5.
During the match, the ballgirl was visibly shocked and frightened after Djokovic appeared to shout "towel" rather aggressively.
After being heavily criticised for his actions, Djokovic was quick to apologise for his mistake and sought out the ballgirl after his 6-4, 6-4, 6-4 win over Marin Cilic in the quarter-finals on Wednesday.
"I've talked with the girl and she said she didn't mind. We cleared the air. I apologised if it was anything that I did," Djokovic told reporters. "It was in a moment of a battle. I turned around and screamed. I'm sorry that she was there in that moment. But I think the media made a much bigger deal out of it than it really is. She is completely okay."
Djokovic added that he should not have let his emotions get the better of him as he should be setting a good example both on and off the court.
"I was a ball kid myself. I respect them," he said. "I try to be grateful for what they're doing as well. I try always to chat with them, give them an item that they appreciate as a souvenir, a towel, a wristband or something like this. I know how much it means to them."
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