CHICAGO -- Left-hander Jorge De La Rosa was signed by the Cubs on Friday after the D-backs released him earlier this week.
De La Rosa, 37, will be available to pitch out of the bullpen for the Cubs' series opener against the Nationals on Friday afternoon at Wrigley Field.
In corresponding moves, Chicago assigned lefty Randy Rosario to Triple-A Iowa and placed right-hander Yu Darvish on the 60-day disabled list, retroactive to May 23. Darvish had been on the 10-day DL for more than 60 days, and the Cubs said that placing him on the 60-day DL was "purely procedural" to make room for De La Rosa on the 40-man roster.