World number one Rafael Nadal takes on Dominic Thiem today as he looks for a record-equalling 20th Grand Slam title at the Australian Open.
Nadal has never lost to Thiem at Major tournaments, beating him in the last two French Open finals, but he's taking nothing for granted against the Austrian fifth seed.
'We know each other well. He's a player that I like a lot, the way that he works, the way that he plays, and the way that he tries his best always,' Nadal said. 'It is a match that's going to be a tough one, but will be interesting. I know I have to be at my best to have chances.'
Nadal and Thiem are playing for a semi-final against Alexander Zverev or Stan Wawrinka, who won the Australian title in 2014 the only player outside the Big Three to do so since 2006.