Radwanska, left, claimed the biggest title of her career in winning the WTA Finals
Poland’s Agnieszka Radwanska beat former Wimbledon champion Petra Kvitova in three sets to win her first WTA Finals title in Singapore.
The world number six came from a break down in the deciding set against her 25-year-old Czech opponent to win 6-2 4-6 6-3 in two hours and five minutes.
It was the 26-year-old’s first final at the event in her seventh appearance.
World number five Kvitova had knocked out five-time Grand Slam winner Maria Sharapova in Saturday’s semi-final.
A tearful Radwanska, the first woman to go on to lift the title after losing two round-robin group games, said: “It means everything to me, in my first final, I get my first win so it couldn’t be any better.
“I was doing the right thing in the important moments of a really close match. I had my chances in the second set but it doesn’t really matter how I won.”