Brazilian tennis player Joao Fonseca reacted to 39-year-old Novak Djokovic's proposal to shorten tennis matches. "I think he is saying that because of his physique. He is getting older," the 19-year-old said with a laugh. Fonseca added, "I know it's more about the classic tennis, the history of tennis and the tennis being six games during the sets; it's important."