JD Martinez fallout, the bench is set and who's getting the last spot in the bullpen?

JD Martinez signs with the Mets. We talk Vientos and more. Bench is set and who gets the last spot in the bullpen? #Mets #braves #marlins #nationals #phillies #MLB #NewYorkMets #atlantabraves #philadelphiaphillies #miamimarlins #washingtonnationals