It was a day of celebration on Sunday at Wimbledon, where a host of former champions partook in an emotional ceremony to celebrate the 100th year of Centre Court. In front of a packed crowd and full Royal Box, an array of Wimbledon champions were greeted onto court by a standing ovation, with Novak Djokovic, Roger Federer, Bjorn Borg, Billie Jean King and Rod Laver among the returning stars.