Five-time major winner Swiatek is yet to drop a set at Melbourne Park this year, advancing with a 6-1 6-0 thumping of Raducanu on Saturday.
It was Swiatek's fourth win in as many attempts against the former US Open champion.
Raducanu was no match for the inspired Swiatek. (Joel Carrett/AAP PHOTOS)
In the build-up, Swiatek said rankings would count for nothing against an opponent sitting 59 spots below her.
But the Pole, who has the chance to regain world's top ranking if she wins the title, looked a class above in the 70-minute clinic on Rod Laver Arena.
Swiatek hit 24 winners to her opponent's nine and dropped just four points on serve, while also converting five of her dozen break points.
"I just enjoyed playing," Swiatek said in her on-court interview.
"I played a few shots where I thought after them, 'This is what I practice for, to play these kind of shots'.
"That's why I really enjoyed today's match and I felt pretty confident, so at the end I could push for even more.
"Having converted all these break points as well was important, so I'm really happy with today's performance."
Swiatek was handed a time violation for delaying the start of the match but pleaded innocence, arguing she was waiting for towels to be delivered.
Textbook performance 📚— wta (@WTA) @iga_swiatek puts on a dominate display to defeat Raducanu in straight sets, 6-1, 6-0!#AO2025 pic.twitter.com/rHzRbz0lJmJanuary 18, 2025
It was the only minor hurdle for the 23-year-old, who held serve to love in the opening game and rattled off another 11 consecutive games to seal the match in convincing fashion.
Swiatek, whose only loss so far this year was a United Cup defeat to the as-yet unbeaten Coco Gauff, will be a hot favourite in the fourth round against either qualifying 'lucky loser' Eva Lys or world No.82 Jaqueline Cristian.
A host of other women's singles seeds are also in action on Saturday, including former Wimbledon champion Elena Rybakina (six) doing battle with Dayana Yastremska (32) at John Cain Arena.
Elina Svitolina (28) takes on Jasmine Paolini (four), while Madison Keys (19) and Danielle Collins (10) face off in an All-American affair.
Collins, runner-up to Ash Barty in 2022, looms as one to watch after making headlines when she wound up the Melbourne crowd following a hard-fought win over local Destanee Aiava in the second round.
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