"Kodai Senga is injured," MLB .com's Anthony DiComo reported. "He took a fall at first base attempting to beat a runner to the bag, and he spent a long time down on the ground surrounded by coaches and trainers."

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’s hamstring strain is Grade 1, the least severe, meaning the right-hander will be shut down for about the next two weeks before being re-evaluated and ramped up to return. This places Senga’s timeline to be back in the Mets’ rotation in the second half of July.