Clashes between players and spectators at Australian Open are just another example of the shouty polarities of our age

Eva Asderaki-Moore probably loves her job. But there were times, during Novak Djokovic’s Australian Open win over Carlos Alcaraz on Tuesday, when the chair umpire clearly had it with the crowd. “Ladies and gentlemen, please,” she pleaded. And then “That’s e-nough!” – which she enunciated like a schoolteacher marshalling her charges on a very long, very noisy coach trip.

You had to feel for her. What is tennis thinking after all? It throws 15,000 people into an arena, whips them up into a state of delirium with some of the greatest feats of athleticism seen in a grand slam quarter-final, then expects pin-drop silence between points. At 1am? When some of these people have been drinking since lunchtime?

The 37-year-old showed killer instinct against younger rival, a willingness to go to hell and back in pursuit of glory

In the most recent late-night exhibition of his insatiable resilience and desire, as he again belied his ageing body to deliver another legendary performance, one of the most significant moments of Novak Djokovic’s quarter-final defeat of Carlos Alcaraz at the Australian Open came as the Serb clung on desperately to his frail momentum.

With a set point on his serve at 5-3 in the third set, Djokovic was hurled around the court by Alcaraz, chasing down a drop shot before stumbling back to the baseline in pursuit of a lob. The frantic point – and set – ended with Djokovic slipping an angled backhand passing shot by Alcaraz before cupping his hands to his ear while the Rod Laver Arena erupted.