Novak Djokovic sets up Roger Federer Australian Open semi-final with dominant win

And there was also a big injury scare as the 20-time Grand Slam winner took a nine-minute medical timeout because of an issue with his groin.

Federer will see his doctor tomorrow to get the full diagnosis but as things stand there are some concerns.

He said: “I don’t know if you can call it an injury. It’s just pain and problems. I need to figure it out now.

“But as it’s not like in 18 hours, like you got a third round to play, semifinals, you have an extra day, adrenaline, there’s a lot of things. Two good nights of sleep, doctors, physios.

source: express.co.uk