Keys got the better of her childhood rival, who has become a controversial figure in Melbourne, on Rod Laver Arena, and made new fans with her ringing endorsement of the city’s coffee scene.

Plus, Grand Slam champs Iga Swiatek and Emma Raducanu's divergent paths cross again in the third round.

There will be no all-American final on the men's side, though, after Felix Auger-Aliassime upset top seed Tommy Paul. He will face No. 2 seed Sebastian Korda.