"The Cardinals hope to determine no later than Sunday whether to put left fielder and cleanup hitter Matt Holliday, who underwent an appendectomy Friday afternoon, on the disabled list.

Holliday, 31, experienced increased lower abdominal discomfort hours after contributing three hits and two RBIs in the Cardinals' 11-inning opening-day loss Thursday to the San Diego Padres at Busch Stadium.

"We'll make a determination. It could be something like six or seven days, or it could be more," general manager John Mozeliak said shortly before Holliday entered surgery. "We don't know at this point. We certainly will know more later."

Holliday complained of minor discomfort before the opener but still contributed an opposite-field eighth-inning home run in what ended in a 5-3 loss. He remained in the clubhouse for some time afterward and appeared before media. However, his situation worsened shortly after he left the stadium.

Dr. Chris Eagon of the Washington University medical staff performed the laparoscopic procedure.

Most of those who attended an optional workout Friday said they had no idea of Holliday's distress until they reached Busch Stadium. Second baseman Ryan Theriot admitted he initially thought the news an April Fool's Day joke."