Novak Djokovic says that unlike Serena Williams, he wouldn't order a coffee on court, and also doesn't care for Chinese food or beer. Williams drank a coffee during the Hopman Cup two weeks ago after she had just arrived in Perth and was very tired.

"The Chinese [food] and a beer and the coffee... I'm not a fan of those three things," Djokovic. "But I guess, judging by what she did, it opens up a new chapter of rules I guess on the tennis court. Maybe we need to explore more and see what you're able and what you're not able to order. Maybe you can order some delivery service, as you mentioned. I don't know. Something that comes to your mind.

"But it's understandable. Some people can't live without coffee in the morning. It keeps them going. I guess that helped her in that match. It wouldn't help me because I'm not a fan of coffee."

Djokovic didn't need a pick-me-up in his opening match at the Australian Open, winning in straight sets over Aljaz Bedene.