The Mets reassigned den Dekker to their minor-league camp Tuesday.
The Mets signed den Dekker to a minor-league contract Thursday that includes an invitation to spring training.
Den Dekker was designated for assignment by the Tigers on Wednesday.
Den Dekker was called up Friday by the Tigers.
Den Dekker signed a minor-league contract with the Tigers on Tuesday, Evan Woodbery of MLive.com reports.
Den Dekker has opted out of his contract to become a free agent, Joe Frisaro of MLB.com reports.
Den Dekker got the start in center field and went 2-for-2 with two solo home runs in Sunday's split-squad game against the Mets.
Den Dekker agreed to a minor league contract with the Marlins on Thursday that includes an invitation to spring training, Tim Healey of the South Florida Sun Sentinel reports.
Den Dekker has cleared waivers and been outrighted to Triple-A Syracuse, Mark Zuckerman of MASN Sports reports.
Den Dekker was designated for assignment by the Nationals on Friday.