According to the New York Post's Mike Puma, Cespedes says a doctor told him he would be out at least a few days.
Mets' Wilmer Flores reacts after hitting a sacrifice fly to tie the game in the seventh inning against the Miami Marlins during a game at Citi Field on July 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. Duda had to leave the game because of the injury.
Any kind of injury to a team's star player is certainly a let down, but since it was diagnosed as a hamstring cramp, there's hope that it is nothing more than that. He missed four months last season with a stress fracture in his back and needed cortisone injections for his back and hips this spring.
Flores has been hospitalized with a knee infection, the Mets said.
While the Mets are hoping it's a short-term injury, Collins wouldn't rule out a stint on the disabled list.
David Wright was also transferred to the 60-day DL to make room on the 40-man roster.
New York Mets left fielder Yoenis Cespedes will undergo an MRI on his left hamstring and manager Terry Collins called the injury "a concern". Cespedes is expected to miss only next two to three games, while d'Arnaud is day to day.
Matt Harvey moved up a day to start in place of deGrom on regular rest.
The Mets sent down pitchers Rafael Montero and Sean Gilmartin, which restored the bullpen to the standard seven pitchers with the reinstatement of closer Jeurys Familia from his 15-game domestic-violence suspension.