New York Mets right-hander Kodai Senga was placed on the injured list on Friday after he exited Thursday's win against the Washington Nationals in the sixth inning after straining

New York Mets right-hander Kodai Senga, the major league ERA leader, was diagnosed with a Grade 1 strain of his right hamstring, hours after he was placed on the 15-day injured list.

Kodai Senga was diagnosed with a Grade 1 hamstring strain (the least severe level among such injuries), manager Carlos Mendoza said following the Mets’ 7-5 loss to the Rays at Citi Field. Senga strained the hamstring Thursday covering first base, and a day later was placed on the injured list.