Eulogio "Frankie" De La Cruz -- a relief pitcher who was a key cog in the trade that sent Miguel Cabrera from the Marlins to the Tigers -- died Sunday ... MLB officials confirmed.
He was just 37 years old.
De La Cruz's Dominican winter league team, Toros del Este, was first to report the news Monday morning, saying in a statement, "Our condolences to his family and friends for this terrible loss. Peace to your Soul!"
The Diario Libre in the D.R. reported the team added his death was due to a heart attack.