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Thanks Emma. So Sofia Kenin awaits the winner of our next match, to be contested between world No 3 Simona Halep and 32-ranked Garbiñe Muguruza. They’re already on court, so let’s have a quick look at the tale of the tape between this pair.

The Spaniard leads head-to-head 3-2, although she trails 1-0 at grand slams, following Halep’s convincing win on the red dirt of Roland Garros in the 2018 French Open semi-final. Halep’s other win over Muguruza also came on clay - in Stuttgart five years ago - while the Spaniard’s three victories all came on hard courts - in Cincy, at the Fed Cup and in Wuhan.

Halep, a former world No 1, is seeking her third grand slam crown, to add to those won in Paris in 2018 and at Wimbledon last year. The Romanian is bidding to reach her second Australian Open final, having lost to the now-retired Caroline Wozniacki in the 2018 decider.

For her part, Muguruza is in the last four of the Australian Open for the first time, but like Halep has also won two previous slams – the French in 2016 and Wimbledon in 2017.

Plenty to look forward to. Please do get in touch with an email (mike.hytner@theguardian.com) or on Twitter @mike_hytner.