With the Mets trading closer David Robertson to the Miami Marlins, New York's closer role is vacant.New York entered the season with high expectations and a superstar closer. When Edwin Diaz sustained a season-ending knee injury in March, the New York bullpen entered a state of flux. However, Robertson and other relievers performed well in his absence.But with Robertson in Miami, the New York Mets will now have to rely on different relievers to close games. Who in the New York Mets bullpen has ...