"Cardinals outfielder Matt Holliday will undergo an appendectomy today.

Holliday, who hit a solo home run in the opener, went home after the 5-3 extra-inning loss to the Padres and began feeling pain.

General manager John Mozeliak said the club will not make any roster moves in the next 24 hours, preferring to hear first from doctors about how the surgery went and the extent of the procedure necessary.

"We'll make a determination. It could be something like six or seven days, it could be more," Mozeliak said. "We don't know at this point. We certainly will know more later."

The procedure will be performed this afternoon by Dr. Chris Eagon of the Washington University medical staff.

Mozeliak did not hear anything about Holliday's discomfort until Friday morning. Holliday experience some soreness on Thursday night but it was only after it persisted through Friday morning that he was taken for examination by a doctor. Mozeliak said doctors saw Holliday before the organ ruptured."