After surviving a tough match against Alex De Minaur in the fourth round at Wimbledon, Novak Djokovic had a funny reason why Monday's win meant more to him.

Roger Federer had a front row seat to watch Novak Djokovic come back in his Round of 16 Wimbledon match vs. Alex de Minaur on Monday afternoon. Djokovic advances to his 16th Wimbledon quarterfinals with the win.

The win marked the 16th time Djokovic has moved into the quarterfinals at Wimbledon. The event has been his second-best Grand Slam over his career. Djokovic has seven wins at Wimbledon, and has played in the final at the event in each of the last six Wimbledons.