Sharapova quits WTA Championships

Maria Sharapova has pulled out of the season-ending WTA Championships in Istanbul after suffering successive straight-sets defeats.

Maria Sharapova retires from tennis at 32 with 5 Slam titles

Maria Sharapova: Leaving an indelible mark on clay

Maria Sharapova: Fit, revitalised and raring to go - Rediff.com

Maria Sharapova at WTA Championships

Sharapova retires from tennis at age 32 with 5 Slam titles

2011 WTA Championships

Serena Williams beats Maria Sharapova in final of WTA Championships

Maria Sharapova retires from tennis at age 32 with 5 Slam titles

Sharapova faces Serena in WTA final