Unbeknownst to Djokovic, another retired legend turned up for his match - Serena Williams was spotted courtside during his victory over Musetti. Once he realised the 23-time Grand Slam champion was in attendance, Djokovic asked Williams an important question mid-match and got a brief response.

Following the match, Djokovic addressed journalists and the audience, sharing some of his experience. "I was starstruck! It was amazing to see first DelPo, obviously a long-time friend and a rival, so happy to have him around and get his support from the box," he said, referring to Juan Martin Del Potro, the retired Argentinean tennis player.

Serena Williams gave Novak Djokovic a hilarious response after the all-time Grand Slam winner sought her thoughts on his passing shot at the Miami Open.