PORT ST. LUCIE – The Mets are dealing with their first hit to their starting rotation this year.
Offseason acquisition Frankie Montas is being shut down for six to eight weeks with a high-grade lat strain, Mets manager Carlos Mendoza announced Monday.
The Post first reported that Montas had a lat injury that would sideline him for a significant stretch.
Montas arrived to the Mets on a two-year contract worth $34 million, which includes an opt-out after the first season.
The Mets’ rotation depth includes Tylor Megill and Paul Blackburn, who is returning from offseason surgery to repair a leak of spinal fluid.


Kodai Senga, Sean Manaea, Clay Holmes, David Peterson and Griffin Canning are already projected starters in a planned six-man rotation this season.
This story is developing, please check back for updates.