Vika became only the 11th year end No. 1 since the rankings began in 1975.

ISTANBUL – Serena Williams has cruised in to the semifinals, but Maria Sharapova did not, as Aga Radwanska pushed her past three hours her second match and while she easily took care of Sara Errani in her opening match and pounded Samantha Stosur 6-0 6-3 in a dead rubber on Friday, she has by no means been on top of her game.

She will need to be in the semifinals, as she will face her new nemesis Victoria Azarenka, who sealed the year-end top spot with 7-6 (4) 6-3 win over Li Na. While Azarenka may not be the people