Johan Santana will have season-ending surgery on his left shoulder to repair a torn anterior capsule.
Team doctor David Altchek, who performed Santana's first anterior capsule surgery on Sept. 2, 2010, will again perform the surgery.
The Mets are responsible for $31 million owed to Santana this season, including a 2014 buyout.
"I've known Johan long enough to know that I don't think that he would want to go out like that," David Wright said. "So he's going to probably work just as hard, or if it's possible work harder, to come back from this. I wouldn't be surprised if I see him pitch again."
Via Adam Rubin/ESPN