An injury to Noah Syndergaard will have the New York Mets scrambling to keep pace in the National League East.

According to Joel Sherman of the New York Post, Syndergaard left Saturday night's game against the St. Louis Cardinals because of a right hamstring strain. On Sunday, the Mets placed Syndergaard on the injured list.

The right-hander was charged with five runs (four earned) in six-plus innings of work, striking out five while walking two. He exited in the middle of an at-bat against Cardinals right fielder Jose Martinez.