There are six Brits in action on the second day of the Australian, including the first Grand Slam match for Emma Raducanu since her US Open triumph.
One is already out – while Andy Murray has already won the most bizarre point of the season so far.
Express Sport rounds up all the action from overnight at the Australian Open.
Andy Murray is back on court but his opponent served into the stand
The former world No.1 made his return to the Australian Open for the first time since 2019 – and in the same stadium (now called the John Cain Arena) where he lost to Roberto Bautista Agut in his last appearance here.
The Scot shared the first two sets with No.21 seed Nikoloz Basilashvili in the first round match.
But the Georgian made an extraordinary double fault on the second point in the third game when he framed his second serve off the top of his racket into the crowd behind Murray. It was one of 18 unforced errors by Basilashvili as the wildcard won the first set in only 23 minutes.
They now find themselves locked in battle, playing a decisive fifth set on John Cain Arena.
JUST IN: Nadal now has major chance to end Djokovic and Federer GOAT debate
After Cam Norrie on the first day, another Brit is out
Harriet Dart suffered another thrashing on the Rod Laver Arena to a Grand Slam champion as she went down 6-3 6-0 to former French Open winner Iga Swiatek 6-3 6-0.
The Londoner was double bageled by Maria Sharapova on the centre court on her Melbourne debut in 2019.
And the Polish No.7 seed showed the same ruthlessness after a solid start by the world No.123. The British No.3 broke to lead 3-1 before losing the final 11 games in a row
Dart, who won three matches to qualify, said: “To play such a champion on a big court, these are the matches you play tennis for. At the same time, it would be nice to have a few matches before you get that opportunity.
“I think I started well today, and then it was tough, and she really found her rhythm. I I kind of let her dictate me, and once you do that against such a high-quality player, it’s really tough to come back from that.”
Novak Djokovic saga branded ‘total BS’ by John McEnroe
Nick Kyrgios health: Tennis star on ‘crazy’ condition
Nick Kyrgios blasted ‘b*******’ Covid rules in furious rant
Another top men’s seed out without hitting a ball
After Novak Djokovic’s no-show, world No.8 Casper Ruud pulled out just before his first match after suffering an ankle injury in practice.
The Norwegian, who reached the fourth round last year, said: “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.”
‘Lucky loser’ Roman Safiullin replaced Ruud in the draw.
The women’s US Open finalist is out
Emma Raducanu is playing the last match in the Rod Laver Arena against Sloane Stephens later. But Leylah Fernandez, the Canadian she beat in the US Open final last September, is already out after a shock 6-4 6-2 defeat to Australian wildcard Maddison Inglis on 1573 Arena.
The teenager, who has won only three matches since her New York run, said: “Today was just not a good day. Too many mistakes. I’ll give credit to Maddie. She played a great match from beginning to end. I unfortunately did not find the right solutions to get back in it and to make it to a third set. It happens.”
World No.133 Inglis said, “This is my first main draw win. I had thought of that moment for a long time. It was just pure happiness. I was so happy. I saw the ball go out and I looked at my box. It was an amazing moment. I’m really so happy I could have it here in Melbourne with all my friends and family there. It was incredible. Really lucky.”
Mixed results for two female Grand Slam champions
Local favourite Sam Stosur put off her farewell from the Australian Open for at least another match after fighting back to beat American Robin Anderson 6-7 6-3 6-3.
The 2011 US Open champion, who will end her singles career after playing the event for the 20th time, said: “Man, that was incredible. That’s a match I’m going to remember forever, probably one of the best singles matches I’ve played in a long time. To do it today, at home… it wasn’t going to be the last. Happy to have another one.”
But double Wimbledon champion Petr Kvitova ended her difficult month Down Under by losing 6-2 6-2 to Romanian Sorana Cirstea.
The 2019 Australian Open finalist, who won only one match in two warm-up events in Adelaide and Sydney, said: “I don’t think I have much to say,” said Kvitova. “It wasn’t really going my way the whole month. That’s how it is. It’s a sport and I just have to fight through and be better at it.”