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 age 32 with 5 Slam titles

WTA Finals: Simona Halep out, Maria Sharapova advances

Wozniacki secures No 1 ranking as Sharapova quits, Tennis

Maria Sharapova plays down her chances of winning WTA Finals in Singapore, Tennis News

Sharapova extends run at WTA Finals

Maria Sharapova plays down her chances of winning WTA Finals in Singapore, Tennis News

WTA Finals: Maria Sharapova powers past Simona Halep, Flavia Pennetta downs Agnieszka Radwanska - ABC News

Maria Sharapova Retires From Tennis at 32 - Bloomberg

Maria Sharapova at WTA Championships

Maria Sharapova and Victoria Azarenka can qualify for WTA Finals in Singapore, says Lindsay Davenport - Sport360 News

Burning Questions Ahead of the 2015 WTA Finals, News, Scores, Highlights, Stats, and Rumors

Maria Sharapova - Wikipedia

Maria Sharapova pulls out of WTA Championships with shoulder injury - Sports Illustrated

Sharapova closes on Roland Garros qualifying place - Eurosport

Sharapova retires from tennis at age 32 with 5 Slam titles