The Cubs and Athletics have completed a mega-deal which will send pitchers Jeff Samardzija and Jason Hammel to Oakland for shortstop Addison Russell .
The two sides reached a deal Friday night, but waited to officially announce the move Saturday. Samardzija and Hammel will slot into the team's rotation, though it's unclear how soon they'll make their first start with their new club.
Russell joins the Cubs' solid collection of prospects. Chicago will also receive outfield prospect Billy McKinney, pitcher Dan Straily and a player to be named later. Of the bunch, only Straily is expected to play a role with the major-league club this season.