Djokovic: "Sometimes I'm ashamed of the way I behave".

Novak Djokovic gave an interview to Vijesti, a Montenegrin daily newspaper.

Although the Serb suffered a muscle tear during the Australian Open, he is likely to be back to play in Doha.

He spoke about what still motivates him to play tennis at his age, while sometimes regretting his behavior on the tennis courts: "A lot of people around me ask me why I continue, because I've already achieved everything in tennis.

The answer is simple: firstly, because I love tennis. And secondly, because tennis is the field in which I develop the most as a person.

It may sound strange, but during a match I feel an incredible range of emotions, from euphoria to anger to disappointment.

Sometimes I'm even ashamed of the way I behave and what I think at times like this.

But I'm proud to be able, despite all that, to behave with dignity, to shake my opponent's hand, whether I've won or lost."