Two all-Australian mixed doubles teams have made it through to the semifinals of their home grand slam.

Coco Gauff discussed why she has a simple fruit salad instead of energy gels.

Meanwhile, Novak Djokovic plays in the Melbourne sun while Jannik Sinner makes it to the final four at Melbourne Park for the first time. 

Here are five quick hits from day 10 at Melbourne Park.

1. Aussie duos through to semifinals of the mixed doubles

The dream remains alive for local hopefuls at the Australian Open with two wildcard pairs advancing to the semifinals of the mixed doubles.

A day after upsetting top seeds Storm Hunter and Matthew Ebden, Jaimee Fourlis and Andrew Harris took down highly fancied duo Laura Siegemund and Sander Gille.

The Australian pair won 7-5, 7-5 to book their spot in the last four against third seeds Su-Wei Hsieh and Jan Zielinski.

Fourlis will be hoping to go one better than in 2022, when she lost the mixed doubles final at Melbourne Park with compatriot Jason Kubler.

They could meet another Australian duo in the decider after fellow wildcards Olivia Gadecki and Marc Polmans stunned sixth seeds Gabriela Dabrowski and Nathaniel Lammons 6-4, 7-6(9-7) to progress to the semifinals.

Although the last Australian singles player, Alex de Minaur, bowed out in the fourth round, Melbourne Park has proved a happy slam for the country's doubles players.

Nick Kyrgios and Thanasi Kokkinakis famously "rolled off the couch" to win the men's doubles at the Australian Open in 2022, beating fellow Australians Ebden and Max Purcell.

Reigning men's champions Kubler and Rinky Hijikata fell in three sets in the second round, ending their title defence.

2. Coco's fruit salad does the trick

It's hard sometimes to remember that Coco Gauff is just 19 years old, since she's been playing in the majors for years.

The 2023 US Open champion is out to add to her tally with victory at Melbourne Park, and she is two steps away after a tough three-set win over Ukraine's Marta Kostyuk, 7-6(8/6), 6-7(7/3), 6-2.

One of the more curious aspects of Gauff's tennis has nothing to do on-court, it is what she consumes during breaks.

The American enjoys a fruit salad, in an era where gels have become popular.

Coco's reasoning for the fruit salad — she has always done it.

"Growing up, when I was training at academy, my mum or my dad … mostly mum, would pack coolers for me, so I could, like, be able to practice all day and then they consisted of like fruit snacks or fruit, apple sauce and Gatorade," she said.

"Why change something that always works? A lot of people like to use the gels and the fancy stuff. But I just like the natural fruit.

"I never really get tired, even after a long match. It is working."

3. Sinner makes it through to first semi in Melbourne

Italian star Jannik Sinner is through to his second grand slam semifinal after overcoming Russian fifth seed Andrey Rublev in a late-night slugfest at the Australian Open.

The two heavy hitters went toe-to-toe on Rod Laver Arena, but the in-form Sinner proved too strong and secured a 6-4, 7-6(7-5), 6-3 win in a match that finished at 1:22 am on Wednesday.