Novak Djokovic enlisted a former foe and longtime friend, Andy Murray, to become his new coach starting this year at the Australian Open. This news rocked the tennis world back in November, mostly because the two legends were often considered rivals on the court.

It will be all business when Andy Murray coaches Novak Djokovic at the Australian Open. While the partnership between two of the biggest rivals in recent men’s tennis history has awakened feelings of shock,