BRISBANE, Australia — This rematch between the Australian Open finalists was lopsided, and Aryna Sabalenka flipped the outcome with a straight-sets win over Madison Keys.
Top-ranked Sabalenka broke Keys' in five straight service games on the way to a 6-3, 6-3 win in 1 1/2 hours Friday to reach the semifinals of the Brisbane International, a tuneup event for the Australian Open which begins Jan. 18.
''I didn't really have the throwback to the Australian Open last year, to be honest," Sabalenka said. "I know that I lost in Australia against her and it's a big motivation, of course, to go out and get the win.
"But I always look into the (next) match as like a new match against a new player. That's my approach."
The defending Brisbane champion will next take on 11th-seeded Karolina Muchova, who had a 6-2, 2-6, 6-4 win over Elena Rybakina to end a 13-match streak for the No. 3 seed. Fourth-seeded Jessica Pegula had a 6-3, 7-6 (3) quarterfinal win over No. 10 Liudmila Samsonova and will next play No. 16 Marta Kostyuk, who beat sixth-seeded Mirra Andreeva 7-6 (7), 6-3.
Muchova has the better of the career head-to-head meetings against WTA Finals champion Rybakina. She also has a 3-1 record against No. 1 Sabalenka.
''Doesn't matter if I'm the one who is leading head-to-head or I'm the one who is losing — I don't care,'' Sabalenka said, adding that her focus is to control the kinds of emotions that derailed her sometimes when she was younger.
''In the past, I could lose a match because I'd be so frustrated. Now I'm just trying to move on like, ‘OK, whatever,''' she said. ''I feel like it's been working well for me.''