American Madison Keys upsets defending champ Aryna Sabalenka to win Australian Open
MELBOURNE, Australia — Aryna Sabalenka threw her racket on the sideline. She sat on her bench with a towel over her head. She then even briefly walked off the court before the trophy ceremony when her bid for a third consecutive Australian Open championship ended with a 6-3, 2-6, 7-5 loss to Madison Keys in the final Saturday.