Former World No.1 Novak Djokovic was knocked out of the Brisbane International in a major quarterfinal upset, while fellow top seed Aryna Sabalenka won through to the semifinals on Friday night.
Djokovic was beaten 7-6 (6), 6-3 by world number 293 Reilly Opelka in one hour and 40 minutes in a late-night match on the centre court while Sabalenka beat Marie Bouzkova 6-3, 6-4 in the women's section.
The big-serving American Opelka hit 16 aces as he claimed the biggest victory of his career on his first-ever ATP head-to-head series match against Djokovic. "The reality is we had nothing to lose coming in against him. He's the greatest player ever so you end up playing more free and you take a lot more risk because it's your only chance. If you play at your normal level, he's going to win every time," Opelka said on court after the match.
The result leaves the 24-time Grand Slam winner Djokovic with 99 career singles titles heading into the Australian Open, which he has won a record 10 times, reports Xinhua. Opelka will match up against another powerful server, France's Giovanni Mpetshi Perricard, while second seed and reigning champion Grigor Dimitrov will face Jiri Lehecka.
In other quarterfinal matches on Friday, Dimitrov advanced to the last-four stage when Jordan Thompson of Australia retired from their match with the score reading 6-1, 2-1. Lehecka beat Nicolas Jarry of Chile 6-4, 6-4 at the Pat Rafter Arena. Giovanni Mpetshi Perricard defeated Jakub Mensik of Czechia 7-5, 7-6(5) in a hard-fought encounter in the other quarterfinal to seal a place in the semifinals.
Earlier on Friday night, world number one Sabalenka beat Marie Bouzkova 6-3, 6-4 in one hour and 44 minutes to set up a semifinal match against teen sensation Mirra Andreeva.
Bouzkova started strong against the two-time reigning Australian Open champion by breaking serve in the first game of the match but could not capitalize on the early advantage. In the other women's semifinal, world number 107 Polina Kudermetova will play Anhelina Kalinina.
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