Norway's Ruud pulls out of Australian Open with ankle injury

 'Lucky loser' Roman Safiullin replaced the Norwegian in the draw and will take on Slovak Alex Molcan later on Tuesday.

"Two days ago in practice, I rolled or twisted my ankle," said Ruud. "I tried everything I could to be ready, but unfortunately I've decided that I'm not 100% and I will not be able to play like I have to, to compete at this level. "I tried to play a little bit yesterday and today to see how it feels. Unfortunately, there were no improvements today ... The plan is obviously to rest."

Ruud reached the fourth round at Melbourne Park last year before retiring with an abdominal injury against Andrey Rublev. The 23-year-old's absence will open up his quarter of the draw, with 11th seed Jannik Sinner of Italy favorite to reach the quarter-finals while Andy Murray, Nikoloz Basilashvili, and Alex De Minaur will also see an opportunity to go deeper.

Ruud's withdrawal means the men's draw lost two of the top eight seeds before they played a match, with world number one Novak Djokovic deported from Australia after losing a court case to have his visa cancellation overturned.