The Cubs reinstated Thielbar (personal) from the paternity list Monday, Jared Wyllys of AllCHGO.com reports.
Thielbar was away from the Cubs for the maximum three games while he welcomed a new addition to his family. Chicago optioned righty Gavin Hollowell to Triple-A Iowa to clear a spot on the 26-man active roster and in the bullpen for Thielbar.