Sharapova edges Radwanska

Maria Sharapova got her start to the WTA Finals off to a winning start with a victory over Agnieszka Radwanska on Sunday.

The Russian superstar came back from a set down to defeat the world number six 4-6, 6-3, 6-4 in Singapore.

Radwanska was in total control of the opening set, fighting off two break points before breaking Sharapova's serve in the ninth game.

The world number three would turn on the class in the second set and run away to a 3-0 lead. While the Pole would break back, a further break for Sharapova would be enough to send the match into a deciding set.

Again Sharapova would start well, as two breaks of serve lead to a 5-2 lead, which the five-time grand slam winner would never relinquish.

"This is my first completed match since July, so it's a pretty big deal for me!" the 27-yer-old told

"Coming into this event I did everything I could to be healthy. I just didn't quite know how my results would go. Even though I didn't play my best tennis today I still got through, and that's what matters, especially against such a tough competitor like Radwanska. We always have such close matches here. To fight hard and be able to win the match in the end means so much to me."