It is a small curiosity that the same solution has been proposed for more or less all of the great, intractable sporting problems of our time.

Maybe this is the kind of thing Serena Williams was getting at.

Another turbulent week, yet there’s a sense too we are on the cusp of a great breakthrough, of landmark progress. There is a mood for change.

It was the week of the trojan horse. And what crept out in the dead of Wednesday night might have changed everything.