Agnieszka Radwanska posing with the Billie Jean King trophy inside the Gardens by the Bay's Flower Dome yesterday. The 26-year-old won the BNP Paribas WTA Finals Singapore presented by SC Global event on Sunday night, beating Petra Kvitova 6-2, 4-6, 6-3 at the Singapore Indoor Stadium. It was the Polish world No. 5's first title at the US$7 million (S$9.8 million) season-ending tournament.