In total, Sinner has won 36 of his last 37 matches, his only defeat coming against Carlos Alcaraz in the final of October’s China Open.

Keys, ranked 14th and seeded 19th, prevented Sabalenka from earning what would have been her third women's trophy in a row at the Australian Open — something last accomplished by Martina Hingis from 1997-99 — and her fourth major title overall.

The Czech Republic's Katerina Siniakova won her 10th Grand Slam women's doubles title Sunday when she and American partner Taylor Townsend clinched the Australian Open crown.