SCOTTSDALE, Ariz. — The Mets have already lost a piece of their pitching depth for the early portion of next season.

David Peterson underwent surgery to repair the labrum in his left hip, the team announced Wednesday, and is facing a rehab that typically lasts six to seven months.

Peterson had the surgery Monday at the Hospital for Special Surgery in New York.

The left-hander has dealt with discomfort in the hip at various points in his career, according to president of baseball operations David Stearns, but there was no indication when the season ended that surgery would be needed.

“I think it persisted a little bit more into the offseason than he was anticipating,” Stearns said at the general managers’ meetings. “We got him checked out with multiple physicians and ultimately surgery was the recommendation.”

Peterson struggled early last season as a rotation fill-in and got demoted to Triple-A Syracuse.

Upon his return at midseason he pitched better and finished with a 5.03 ERA in 27 appearances overall.

Tylor Megill, Jose Butto and Joey Lucchesi are others who fit into the rotation-depth category for the Mets, who are beginning the offseason with only two proven starters — Kodai Senga and Jose Quintana — in their rotation for next season.

“[Peterson’s absence] takes somebody that was going to be part of our mix for the first half of the season and now he’s not available,” said Stearns, who arrived last month. “That does change our depth chart. We’ll have to make sure we have sufficient depth and it’s certainly my hope and expectation that he’s going to be able to play an important role in the second half.”

Stearns said it’s still under discussion whether the Mets will tender a contract to Daniel Vogelbach for next season. The non-tender deadline is Nov. 17.

“I understand the skill set he brings — I acquired him in my previous spot [Milwaukee], and so I appreciate that,” Stearns said. “I also have to look at how it fits into the broader scope of our team now and we haven’t made any decisions there yet.”

Stearns was asked to define Vogelbach’s skill set.

“He gets on base and he controls the strike zone at a very elite level,” Stearns said.

Vogelbach had a .233/.339/.404 slash line with 13 homers and 48 RBIs last season.

The Mets are confident that Starling Marte won’t need further groin surgery, according to Stearns.

The veteran outfielder missed the final two months of the season with right groin discomfort after undergoing surgery on both groins last offseason.