WASHINGTON -- The St. Louis Cardinals activated reliever Trevor Rosenthal from the 10-day disabled list before their game with the Washington Nationals Monday.
Rosenthal was set back in spring training with a strained right lat muscle and didn't recover in time to begin the season on the active roster. The Cardinals hope the former closer can help the bullpen recover from a rough first week.
The team optioned Sam Tuivailala to Triple-A Memphis.