Sheffield was outrighted to Triple-A Albuquerque on Tuesday.
Sheffield was designated for assignment Friday, Patrick Lyons of TheDNVR.com reports.
Sheffield was optioned to Triple-A Albuquerque following Monday's loss to the Padres.
Sheffield was recalled from Triple-A Albuquerque on Saturday.
Sheffield (lat) struck out one over a scoreless inning out of the bullpen Tuesday for Triple-A Albuquerque after he was reinstated from the 7-day injured list.
Sheffield, who was placed on the 7-day minor-league injured list with a lat strain April 26, has resumed throwing, Danielle Allentuck of The Denver Gazette reports.
Sheffield was optioned to Triple-A Albuquerque after Monday's game against the Phillies, Nick Groke of The Athletic reports.
The Rockies recalled Sheffield from Triple-A Albuquerque on Wednesday.