 DeGrom pitched for the Savannah Sand Gnats of the Class A South Atlantic League and the St. Lucie Mets of the Class A @-@ Advanced Florida State League in 2012 , finishing the year with a 2 @.@ 43 ERA in 19 games started . In 2013 , he began the season with St. Lucie , but was promoted to the Binghamton Mets of the Class AA Eastern League after two starts due to injuries to Binghamton 's Luis Mateo and Cory Mazzoni . He received a promotion to the Las Vegas 51s of the Class AAA Pacific Coast League in June after the Mets promoted Zack Wheeler and Carlos Torres to the major leagues and traded Collin McHugh . He had a combined 4 @.@ 51 ERA for the season , due to a broken finger suffered during the offseason , which altered the way he threw the ball . 
