The Marlins optioned Sanchez (shoulder) to Triple-A Jacksonville on Wednesday, Jordan McPherson of the Miami Herald reports.
Sanchez has yet to resume a throwing program since he was shut down earlier this month after experiencing continued discomfort in his surgically repaired right shoulder. At this stage, the Marlins aren't expecting him to be available until around midseason at the soonest, so the decision to remove him from the active roster doesn't come as a major surprise. Because Sanchez will likely be placed on Jacksonville's injured list rather than the Marlins', fantasy managers may not have the luxury of stashing the 23-year-old in a reserve slot during what's expected to be a prolonged absence to begin the season.