As the Mets turn the rest of this disappointing season into a training ground for their young prospects, some of the lessons are bound to be more painful than others.
In a 6-4 loss to the Miami Marlins on Sunday at Citi Field, the growing pains of Amed Rosario proved costly for starter Jacob deGrom.
The Mets were trailing, 2-1, with one out in the seventh inning and the Marlins’ Miguel Rojas on second base. Dee Gordon, who already had stolen two bases, grounded to Rosario — the Mets’ highly regarded 21-year-old shortstop, who was called up from the minors less than three weeks ago.