TAMPA — Scott Effross’ road back from Tommy John surgery has been delayed by a procedure on a different part of his body.

The Yankees reliever underwent back surgery in December, manager Aaron Boone said Wednesday, which will delay his availability until some point this summer.

Effross underwent Tommy John surgery in October 2022, which caused him to miss all of the 2023 season, but he was hoping to have a normal spring training this year.

Instead, the back issue crept up on him late in the fall, Boone said, and after trying to work through it he eventually needed the surgery.

“So that set [his Tommy John rehab] back a little bit,” Boone said. “He’s begun his throwing program, I think last week, but it’s a little convoluted because you’re finishing off Tommy John [rehab] and then you throw the back into the mix. It’ll be a slow ramp-up.”

With Effross on the shelf, there is at least one bullpen job to be won this camp, which could open the door for someone like Ron Marinaccio to make the team.

The Yankees originally acquired Effross from the Cubs at the 2022 trade deadline.

The 30-year-old right-hander, who is under contract through 2027, posted a 2.13 ERA across 13 appearances that season before suffering a torn UCL and needing Tommy John surgery on the eve of the 2022 playoffs.

Jose Trevino recently suffered a strained calf during his ramp-up for spring training, Boone said, which will force him to miss “the first couple weeks” of Grapefruit League games.

The manager said he expected Trevino to be ready for the start of the regular season.

Trevino did some light agility drills on a backfield Wednesday and has already been running and doing catching drills, per Boone.

“Responding really well, so he’ll just be a little slow,” Boone said.