Lefty reliever Brad Wieck is back in Arizona after being away from the team for a while to undergo a procedure to correct an abnormal heartbeat discovered during a pre-spring training physical. The Cubs had not disclosed the reason for Wieck’s absence at the time for privacy reasons, but they announced Thursday he underwent a cardiac ablation and will be re-evaluated late next week to determine when he can resume throwing.
Wieck went to Northwestern Memorial Hospital in Chicago for the procedure, which scars small areas of the heart that are involved in creating rhythm problems.