By John O'Brien
SINGAPORE (Reuters) - Agnieszka Radwanska was left to rue a failure to take her chances when she stumbled to a 7-5 1-6 7-5 defeat against Russia's Svetlana Kuznetsova in the opening match of her WTA Finals defense on Monday.
The Polish world number three led 4-1 in the first set and held a match point in the 10th game of the decider but was unable to capitalize both times as her opponent dug deep to claim victory in an absorbing contest.
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"Well, of course it's very disappointing, especially that I had chances and just let them slip away," the 27-year-old told reporters.
"To turn up like this, against players like Sveta (Kuznetsova), if you don't take your chances, you're not going to be a winner."
Radwanska, however, knows all is far from lost after defeat in her White Group opener. Last year, the Pole advanced to the semi-finals with a 1-2 record and still went on to claim the biggest win of her career, beating Petra Kvitova in the final.
"I still have a chance, especially as I was two losses down last year," she added.
"But, of course, at the moment you're always thinking about the match that you just lost, so I think I need to cool down first and then I will think about what I have to do to go to the semi-finals."
Despite the defeat, Radwanska was satisfied with her overall performance in the Singapore Indoor Stadium and believed the result could have been different had a couple of key moments gone her way.
"Overall, it was a good, tough match. I think a lot of things were happening," she added.
"I could play a little bit better. Couple of mistakes in the bad moments and not the right decisions I guess, and, yeah, that cost me a lot."
French Open champion Garbine Muguruza and first-time finalist Karolina Pliskova are the other two players in Radwanska's pool at the elite eight-woman event.
(Editing by Ian Chadband)