France's Kristina Mladenovic and Croatian Ivan Dodig swept to a 6-3, 6-4 victory against local duo Jaimee Fourlis and Jason Kubler to claim the Australian Open mixed doubles crown at Melbourne Park on Friday.

Playing under a closed roof on Rod Laver Arena, Mladenovic and Dodig got off to a solid start, securing a vital break at 4-3 before closing out the set after some big serving from the Frenchwoman.

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The Australian wildcard pairing was broken again early in the second set as Dodig's exquisite play at the net proved too good for Fourlis on serve.

The 22-year-old, however, made amends right away and forced Dodig into an error to get the break back and level at 2-2.

Momentum swung back quickly to Mladenovic and Dodig, however, and they secured another break before a fine angled volley from Mladenovic gave the fifth-seeded pair its first Grand Slam title.

"We texted each other many times to play mixed. What a way to end our first time playing together," said Mladenovic.