The Daily Herald:

MESA, Ariz. - Cubs second baseman Mark DeRosa was taken to a local hospital for precautionary measures early Saturday afternoon after reporting a rapid heartbeat and having some difficulty breathing.

An ambulance arrived at the team's Fitch Park facility at about 12:15 Mountain Time. DeRosa was sitting up on a stretcher when he was wheeled off by paramedics.

According to the Cubs staff, DeRosa has a history of irregular heartbeats. The problem surfaced during Saturday's workouts when DeRosa was taking fielding practice.

Piniella says DeRosa is "completely stable," but for the moment will remain at the hospital for precautionary tests.