According to Marc Carig of the Newark Star-Ledger, the Yankees have designated reliever Steven Jackson for assignment. The club needed roster space in order to make a flurry of moves on Friday, including the activation of slugger Alex Rodriguez.
Jackson, a 27-year-old right-hander, was recalled by the Yankees on April 19 of this year, but didn't make an appearance. He's 27-29 with a 4.28 ERA in six minor league seasons.