Updates from the quarter-finals at Melbourne ParkAshleigh Barty reaches maiden
Australian Open semi-finalAny thoughts? Email or tweet @JPHowcroft 5.39am GMT

The medical time out is taken. It's an off court MTO for Roger Federer.#AO2020 | #AusOpen pic.twitter.com/U4QvCZdZ7Y 5.37am GMT
Here we go - the physio has been called and Federer departs RLA for an assessment. Tactical? The explanation for Roger’s poor play? TV comms speculate it might be a hip or groin issue if it’s something that can’t be worked at on-court to begin with. Federer has recent history of back issues, which could be at the heart of any short-term problems. Federer is calling the physio