Normally, if a big name like Rafael Nadal or Roger Federer are on a practice court at Wimbledon, they get all the attention with fans lining up and clamoring for a view.

On Sunday, spectators were given a thrill when Nadal, Federer and Novak Djokovic all practiced side-by-side at the same time. The only bad news for fans was that it was Middle Sunday, a traditional day off, so there weren't that many people on site. 

In the quarterfinals on Wednesday, Federer will take on Kevin Anderson, Djokovic will face Kei Nishikori, and Nadal will battle with Juan Martin del Potro.

Strokes of Genius is a world-class documentary capturing the historic 13-year rivalry between tennis icons Roger Federer and Rafael Nadal. It is timed for release as the anticipation crests with Roger as returning champion, 10 years after their famed 2008 Wimbledon championship – an epic match so close and so reflective of their competitive balance that, in the end, the true winner was the sport itself.