Top seed Iga Swiatek tumbled out of the Australian Open on Saturday, losing 3-6, 6-3, 6-4 to Czech teenager Linda Noskova in the third round as her bid for a maiden title at Melbourne Park and fifth Grand Slam trophy fell apart.

The Pole, more accustomed to breezing past opponents with the odd "bagel" 6-0 scoreline thrown in, had struggled in Melbourne, enduring a first-set tiebreak in her opener against Sofia Kenin before fighting back from the brink of defeat to oust Danielle Collins last time out.

It was not to be Saturday, as Noskova became the first teenager to defeat the top-ranked player at the Australian Open since Amelie Mauresmo toppled Lindsay Davenport in 1999.