D'Arnaud is working out with his own physical therapist/trainer at home in California and the Mets are uncertain when he will resume throwing a baseball, general manager Sandy Alderson said Tuesday.
D'Arnaud landed on the disabled list on April 26 with what was labeled a right rotator cuff strain. He tried to resume throwing on May 7 at the Mets' complex in Port St. Lucie, Florida, but was dispatched to New York for another examination with team doctors after discomfort resurfaced.
Alderson said d'Arnaud has passed the initial phase of his rehab in that the shoulder has settled down and the pain has been eliminated.
"He's moved on to another phase," Alderson said.
As for why d'Arnaud is out in California, the GM added: "He's more or less as well off out there with somebody who knows him as well as our guys would know him. Right now I can't give you chapter and verse on exactly what his return [date] is. We have to keep in mind that sometimes when we cite chapter and verse on when he will return, we're kidding ourselves."
As for when d'Arnaud will resume throwing, Alderson said: "I can't really tell you that."
Meanwhile, infielder Wilmer Flores is at the team's complex in Florida. Flores, who landed on the DL last week with a hamstring strain, is experiencing no pain in that muscle, according to Alderson.
"The injury was originally described as a very moderate pull, so I think that's being reconfirmed," Alderson said.