Ashleigh Barty got the better of Garbine Muguruza on Thursday to set up a semi-final clash with Petra Kvitova at the Qatar Open.
The Australian world number one lost the second set on a tie-break, but won her last eight clash 6-1 6-7 (4) 6-2 in Doha.
Up next for Barty, after her one hour and 51 minute encounter, is a match with 29-year-old Petra Kvitova.
Kvitova, a two-time Wimbledon winner, held her nerve against Tunisia’s Ons Jabeur to win 7-6 (2) 7-6 (4).
The unseeded Svetlana Kuznetsova rolled back the years to stun fourth seed Belinda Bencic and book a semi-final berth with a 6-4 6-4 victory.
It was not so straightforward for Aryna Sabalenka, after she needed two hours and 20 minutes to defeat Zheng Saisai 3-6 7-6 (2) 6-3.
In Acapulco, Britain’s Heather Watson reached the semi-finals of the Abierto Mexicano Telcel with a three-set victory over America’s Christina McHale.
Seventh seed Watson won 6-3 1-6 6-1 in a match lasting almost two hours and will face Chinese qualifier Xiyu Wang in the last four after Wang beat compatriot and sixth seed Lin Zhu 6-2 6-2.
The other semi-final will see home favourite Renata Zarazua take on 17-year-old Canadian qualifier Leylah Fernandez.
Wild card Zarazua, who stunned top seed Sloane Stephens in the last 32, overcame Slovakia’s Tamara Zidansek 6-2 3-6 6-2, while Fernandez reached her first semi-final by beating fellow teenager Anastasia Potapova of Russia 6-3 7-5.
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