The Marlins transferred Garrett (forearm) to the 60-day injured list Tuesday.
Garrett began a throwing program last week -- roughly a month after a forearm flexor strain sent him to the injured list. He still figures to be sidelined for another few weeks, so the Marlins will move him to the 60-day IL and give his 40-man spot to Jesus Tinoco, who was claimed off waivers from the Cubs on Tuesday.