Coco Gauff has endorsed a revolutionary idea from Novak Djokovic to make professional tennis more entertaining for fans. Both players are currently in the midst of their Australian Open campaigns, and while out in Melbourne the Serbian raised eyebrows by voicing a new idea.

Novak Djokovic, Coco Gauff roll to Australian Open's 4th round. Naomi Osaka retires due to injury and Jessica Pegula was upset in the third round.

Naomi Osaka, a two-time champion in Australia, stopped playing because of a strained abdominal muscle after dropping the first set of her match against Tokyo Olympics gold medalist Belinda Bencic.