Maria Sharapova calls news conference for 'major announcement'

LOS ANGELES -- Maria Sharapova has called a news conference to make what her agent calls a "major announcement."

The news conference is scheduled for 3 p.m. ET Monday in Los Angeles. Her agent, Max Eisenbud, declined to say what the subject of the announcement is amid speculation she could retire.

Sharapova, 28, announced Thursday she was pulling out of the BNP Paribas Open at Indian Wells because of a left forearm injury. She has suffered a string of injuries in recent years, including a right leg injury that caused her to withdraw from the US Open.

The five-time major champion hasn't competed since losing to Serena Williams in the Australian Open quarterfinals in January.

Sharapova, who is involved in numerous business ventures off the court, is currently No. 7 in the WTA rankings.

The Associated Press contributed to this report.