The Chicago Cubs agreed to terms on non-guaranteed split contracts with pitchers Andy Sonnanstine and Manny Corpas on Monday.  Both contracts were for the 2012 season.  Sonnanstine has spent his entire five-year career with the Tampa Bay Rays and has made 80 starts, but has been used primarily as a reliever for the past two seasons.  In 2011 Sonnanstine made 15 appearances, four starts, with the Rays and posted an 0-and-2 record with a 5.55 ERA.  Corpas missed the entire 2011 campaign while recovering from Tommy John surgery.  He made 56 relief appearances in 2010, going 3-and-5 with a 4.62 ERA and 10 saves.