Murray also knows Djokovic’s potential opponents inside out.

Murray had played everyone Djokovic faced from the third round onwards in Melbourne – Tomas Machac, Jiri Lehecka, Alcaraz and Zverev – in the past four years.

“I know what the speed of their serve is like, what the top-spin on their shots is like, and hopefully have a decent understanding of their strengths and weaknesses,” Murray said.

During Djokovic’s victory over Alcaraz, former British number one Annabel Croft spotted the Serb going low down the middle during the rallies.

Asked afterwards by a small group of British reporters about his tactical input, Murray grinned.

He refused to take the credit, insisting it was all Djokovic’s own work.

But given his meticulous attention to detail, it would be a surprise if Murray isn’t studying hours of video footage and combing through statistics.

“When Andy played he was one of the more data-driven players out there,” said former Australian player John Millman, who is working as an analyst, external with host television broadcaster Channel Nine.

“He felt better going into a match with that wealth of information. I’m sure he’s brought that into the Djokovic camp.”