Switzerland's Roger Federer makes a forehand return to Tennys Sandgren of the US during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia, Jan 28, 2020. (ANDY WONG / AP)

MELBOURNE - Roger Federer scrapped through to the Australian Open semifinals on Tuesday where he will meet fellow legend Novak Djokovic, while Australia's Ash Barty and Sofia Kenin also booked a place in the final four on day 9 of competition.

Federer survived seven match points against unseeded United States player Tennys Sandgren 6-3, 2-6, 2-6, 7-6, (10-8), 6-3, with the Swiss master proving once again that he has multiple lives at this tournament.

It will be the 50th meeting for the two greats, with Djokovic winning 26 of their past encounters, compared to Federer's 23

Last round, Federer won six consecutive points to claim a match tiebreak against Australia's John Millman, and he showed similar survival skills to walk away victorious once again.

"I think I got incredibly lucky today," Federer said in a post match interview.

"I was just hoping that maybe he wasn't going to smash a winner, if he misses one or two match points, who knows what's going to happen?"

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Federer will be joined by defending champion Novak Djokovic, who beat Canada's Milos Raonic, 6-4, 6-3, 7-6.

It will be the 50th meeting for the two greats, with Djokovic winning 26 of their past encounters, compared to Federer's 23.

Serbia's Novak Djokovic stretches out for a forehand return to Canada's Milos Raonic (not in frame) during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia, Jan 28, 2020. (DITA ALANGKARA / AP)

Meanwhile, Barty beat Czech player, Petra Kvitova, 7-6 (8-6), 6-2, while Kenin brought to an end to Tunisian Ons Jabeur's historic run, 6-4, 6-4.

Jabeur is the first woman from an Arabic nation to reach the quarterfinals of a singles major tournament, beating former Australian Open winner, Caroline Wozniacki and China's Wang Qiang on her way.

With renewed confidence Jabeur said that she will continue to pursue her dream of one day winning a Grand Slam.

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"I was also looking to myself to win a Grand Slam event before - but now I think I'm more close. I think I can believe more in my dream," Jabeur said.

Meanwhile, Barty's chances of winning a Grand Slam on home soil radically improved, following a powerful performance against Kvitova.

The two-time Wimbledon champion ended Barty's run to the finals in Melbourne last year, but this time Barty flipped the script, becoming the first local woman to earn a place in the Australian Open semifinals in 36 years.

"I knew I had to bring my absolute best today against Petra," Barty said in a post match interview.

"In my eyes she's the perfect competitor, regardless of whether she wins or loses she's always got a big grin on her face. I absolutely love testing myself against her."