The Cubs called up top prospects Brett Jackson and Josh Vitters before Sunday's game against the Dodgers. Jackson and Vitters were both No. 1 draft picks for Chicago. Jackson was taken in 2009 and Vitters in 2004. Jackson hit .256 with 15 homers and 47 RBIs this season at Triple-A Iowa. Vitters hit .304, with 17 homers and 68 RBIs.