The WTA tour since inception in 1975 has witnessed many stars clinch the year-end WTA World No.1 crown over the years.

Zheng Qinwen crushed Jasmine Paolini to reach the WTA Finals last four as an already-qualified Aryna Sabalenka lost to an inspired Elena Rybakina .

Qinwen Zheng booked her place in the last four of the WTA Finals with a dominant 6-1 6-1 victory over Jasmine Paolini.

Zheng Qinwen cruised to a 6-1, 6-1 win over Jasmine Paolini to reach the semifinals of the WTA Finals on Wednesday.