Sharapova quits WTA Championships

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

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Maria Sharapova at WTA Championships

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With 5 Grand Slam titles, tennis star Maria Sharapova calls it quits! Some fascinating facts about her - Pics

Maria Sharapova retires: Five-time major champ leaves tennis at 32 – The Denver Post

Five-time major winner Sharapova retires aged 32, Sports

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Maria Sharapova pulls out of WTA Championships in Istanbul with injury, Maria Sharapova