Agnieszka Radwanska beat fourth-seeded Petra Kvitova, 6-2, 4-6, 6-3, at the WTA Finals in Singapore on Sunday to clinch the biggest title of her career.
For Radwanska, of Poland, seeded No. 5, her previous best at the season-ending championship was reaching the semifinals in 2012 and 2014.
u25a0 Roger Federer mastered Rafael Nadal in their first meeting in almost two years to win the Swiss Indoors final, 6-3, 5-7, 6-3, in Basel. (AP)