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US Open champion Sabalenka has an immaculate record at the WTA 1000 event, where she extended her dominance.

The showdown was a rematch of this year's Australian Open final, in which Sabalenka also came out on top.

She is now unbeaten in four matches against Zheng, this year's Olympic champion. 

Having required just 38 minutes to take the first set, Sabalenka was pegged back in the second, eventually succumbing after saving four break points.

Yet the Belarusian regained the impetus in the decider, swiftly taking a double-break lead and hardly looking back from there.