... Additionally, Maria Sharapova - who had already qualified - announced she has to withdraw due to a right shoulder injury, which has limited her action in the second half of the season to only one match.
"I am very disappointed that I will not be able to play in the TEB BNP Paribas WTA Championships this year," Sharapova said. "The fans in Istanbul have welcomed us each year with such intense passion and warmth, I will sincerely miss the energy and excitement they brought to the year-end tournament. I want to thank Istanbul for being a tremendous host and hope to play in Turkey sometime in the future."
http://www.wtatennis.com/news/article/3484087/title/kvitova-errani-jankovic-qualify