The Cubs will designate Alberto Cabrera for assignment, reports Gordon Wittenmyer of the Chicago Sun-Times (via Twitter). Cabrera lost the competition for the last bullpen slot to Brian Schlitter.
The 25-year-old has thrown 27 2/3 MLB innings over the last two years, all in relief, and posted a 5.20 ERA. He has split his time in the minors in recent years between starting and relieving. Signed as an amateur free agent out of the Dominican Republic in 2005, Cabrera has spent his entire career in the Cubs organization.