
World number one Aryna Sabalenka become the first player to progress into the last four of the WTA Finals with a straight-sets win over Jasmine Paolini.
After Sabalenka had got the better of Zheng Qinwen on Saturday, the Belarusian backed it up with a 6-3 7-5 victory after a 90-minute battle with Paolini in Purple Group.