As a sport tennis is about entertainment. While this is normally restricted to tennis on the court that is watched by fans there is no reason why this should not apply off the court too. If tennis players can be entertaining outside of the competition time then they should be.

Many sports entertain an cater to their fans in different ways than simply through the sport. This is particularly the case with Football that has sought to commercialise the sport through merchandise along with friendlies, tours by teams to foreign countries. Then there are other more direct entertainment such as films and computer games.

1. ^ Novak Djokovic wows US Open crowd with a win – and a McEnroe impression, The Guardian, 8th Spetember 2009, http://www.guardian.co.uk/sport/2009/sep/08/novak-djokovic-john-mcenroe-radek-stepanek

Djokovic mimicked the mannerisms and serving style of McEnroe, placing the baseline he hurled the ball high into the air hitting it hard into the net. Djokovic threw his racket to the ground, pointed at the line and screamed at an imaginary umpire, "It was wide!" with a "You cannot be serious" rant. He does impersonations of other tennis players such as Rafael Nadal and Maria Sharapova.^[1] On this occasion McEnroe was sporting and came down from the commentary box and played for a couple of points, even adding some impressions of his own. However this may not always be the case, not everyone would take such a widely publicised impersonation so kindly as although it is in good humour Djokovic is mocking many of his fellow tennis players.

1. ^ Frank Praverman, Novak Djokovic adds John McEnroe to his list of victims at the US Open, Times Online, 8th September 2009, http://www.timesonline.co.uk/tol/sport/tennis/article6825633.ece