Morning all, the question on everyone's lips is how is 38-year-old Roger Federer's body feeling heading into today's last-four shoot-out with Novak Djokovic?
"What he did was awesome, he showed me he's one of the best players of all time", said Djokovic, who is targeting a record eighth title in Melbourne.
But he was under pressure early from a six-time Australian Open champion.
Federer was up 4-1 and 40-0 on Djokovic's serve but the Serb managed to save all three breakpoints to win his first service game as his opponent made an array of unforced errors.
Both players received medical attention at the end of the first set and it was once again Djokovic who raised his game up a notch to convert his fourth breakpoint chance with a forehand victor at the net to grab the second set.
Federer received the code violation in the third set of his match against Sandgren when a lineswoman reported Federer to the umpire, Marijana Veljovic, who issued the warning.
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The Swiss tennis star lost the match in straight sets despite a strong start to the first set.
"Once I was in the match I felt I would be able to continue".
"Today was terrible to go through what I did", Federer said.
"When I was on the court at the beginning, I was really paying too much attention on his movement, what he was really doing".
"Roger is Roger. You know that he's always going to play on such a high level, regardless of the surface", Djokovic said.
"You never know what the future holds particularly at my age", he said.
The next opportunity to gain that 21st title will be at Roland Garros in May, after he confirmed at the end of past year that he will be playing all four Grand Slams and the Olympics in Tokyo during his 2020 season. I didn't practice. I took a day off the next day.
Despite facing a partisan crowd on the Rod Laver Arena the 32-year-old Serb showed again just how hard he is to beat at a venue where he has already won seven times. I don't think I would have gone on court if I felt like I had no chance to win.