Murray was not just talking tennis’s greatest of all time, because Djokovic’s ownership of that honour has long since been put to bed. He was backing Djokovic’s claim to be the pre-eminent performer across the whole of sport; nay, the whole of sporting history.

But Australian coach and strategist Craig O’Shannessy, who helped Djokovic claim four grand slam titles between 2017 and 2019, believes Murray’s appointment is proving a masterstroke.