At 02:30am in Melbourne, David Law, Catherine Whitaker and Matt get together on The Tennis Podcast to discuss a tumultuous day of tennis at the Australian Open.

And there's only one place to start: Stefanos Tsitsipas’ thrilling late-night defeat of Roger Federer. What was the key to his victory? How does he manage to play with so much belief? How high was Federer’s level? And does this result signal a changing of the guard?

Afterwards, Federer announced that he intends to play on clay in 2019. What’s behind that decision?

Arguably the biggest shock of the day, however, came in the women’s draw as Danielle Collins thrashed Angelique Kerber. What on earth happened there? And what do we think of the way Collins embraces confrontation?

Elsewhere, there’s a look back on Ash Barty’s win over Maria Sharapova. Can the Australian keep it going? And why did Sharapova’s game just disintegrate?

The impressive form of Rafael Nadal is also discussed, as well as another step in Frances Tiafoe’s journey. 

The Tennis Podcast will be produced daily throughout the Australian Open (and at all the Slams) after our Kickstarter was funded by our listeners. It is produced in association with The Telegraph.

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