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.

Mets ace Kodai Senga will be out for some time due to the hamstring injury he suffered last week while trying to cover first base.

The important step now for Senga and the Mets is to ace this recovery process, in a way they didn’t with either of Senga’s rehabilitations last year. In both instances, it appeared he and the Mets were not on the same page at times. Questions about Senga’s next steps or his ultimate timeline were met with shrugs more often than with other players.