Petrova finished World Championship WTA with victory over Sharapova
Group World final championship WTA ended in Los-Angelos. In "black" group Elena Dementeva lost to Belgium player Kim Leisters and became the only tennis player who lost in all matches.
In "green" group Maria Sharapova who already got into semi-final was defeated by Nadezhhda Petrova.
In semi-final will play: Lindsey Davenport - Mari Piers, Maria Sharapova - Amely Moresmo.