Radwanska into last four at WTA finals

Defending champion Agnieszka Radwanska has reached the last four of the WTA finals in Singapore after a 7-5 6-3 win over Karolina Pliskova.

The Pole will play world number one Angelique Kerber in the last four while Svetlana Kuznetsova takes on Dominika Cibulkova in the other semi-final.

Kuznetsova, who had already qualified for the last four, lost 3-6 6-0 6-1 to Spain’s Garbine Muguruza.