Aryna Sabalenka Sets Up Brisbane Semi Against Russian Teen Mirra Andreeva

World number one Aryna Sabalenka stepped up her Australian Open preparations as she overpowered Marie Bouzkova in straight sets to reach the Brisbane International semi-finals on Friday.

Sabalenka, who has won the last two titles at the Grand Slam in Melbourne, beat the Czech player 6-3, 6-4 in 1hr 45mins.

She now plays Russian teenager Mirra Andreeva, who defeated Tunisia's Ons Jabeur 6-4, 7-6 7/2.

'Her movement is really great, she's trying to get to every ball and make you play an extra shot so that's really difficult,' Sabalenka said of the 44th-ranked Bouzkova.

'I came into this match really focused and I'm really glad I was able to put her under pressure and finish it in straight sets.'