Updated

MOSCOW (Reuters) - Maria Sharapova has pulled out of this week's WTA tournament in Montreal with a heel injury, the Russian said on Monday.

"I felt some pain in my foot late in the second set which kind of scared me so I have been forced to pull out of Montreal," the former world number one said on her official website (www.mariasharapova.com).

(Reporting by Gennady Fyodorov; Editing by John O'Brien)