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The indicators had perhaps been there for anyone who was properly listening and yet, 24 hours on, Ash Barty’s retirement remains a seismic shock for tennis.

Covid had already helped pave the way for her to walk away for a second time in her relatively brief career from a sport in which she was the world’s best player.

Ahead of her Wimbledon title last summer, she had told me across a computer screen that the Covid lockdown and her initial decision not to travel to tennis tournaments had given her a wider perspective on life.

Her prevailing thought was that there was more to life than simply hitting a ball over a net, as she put it. Now she has