The Orioles’ ever-changing pitching staff now includes a few new but familiar faces.

Right-handed reliever Tommy Hunter was signed to a major league contract after his release from the Indians made him a free agent, and reliever Oliver Drake was called up from Triple-A Norfolk to add another option to a floundering bullpen.

“We need some arms,” Orioles manager Buck Showalter said before today’s game against the New York Yankees. “We knew we could get through one day, and we knew we were going to go to seven today. Executive vice president Dan Duquette and I talked a lot about how we probably needed two. But Tommy was available, and we got him.”

Showalter said Hunter, who was with the Orioles from 2011 until last year’s trade deadline, brings experience. He was most recently rehabilitating with the Indians’ Triple-A affiliate after suffering a back injury carrying his newborn son down the stairs. He had a 3.74 ERA for the Indians, and also missed part of the season after having three offseason core-muscle surgeries.

Mets injury update

Mets left-hander Steven Matz remains in line to rejoin the starting rotation this week, though his return from left shoulder tightness likely will come one day later than expected.

Matz could be activated to make Thursday’s start against the Marlins, manager Terry Collins said after Sunday’s 5-1 loss to the Phillies. Moving the left-hander back one day would allow him to throw a full bullpen session on Tuesday.

Said Collins: “We think he should probably throw one more ’pen and we’ll probably throw him Thursday.”

The Mets might have to wait on the availability of Yoenis Cespedes, Neil Walker and Asdrubal Cabrera for Monday’s series opener against the Marlins.

Cespedes and Walker were out of the starting lineup on Sunday — and Cabrera left in the first inning — after all three suffered flare-ups of prior injuries.

Collins benched Cespedes as a precaution after he complained of stiffness in his right calf, the same muscle that had sidelined him for two weeks.

Walker had trouble with his balky back. He has played just four games since Aug. 15, a combination of his three-day paternity leave and lingering back tightness that had also plagued him in June.

“It’s something I’ve dealt with so there’s no telling how it comes and goes,” Walker said. “Sometimes it takes a couple of days, sometimes it takes a week to 10 days.”

Cabrera re-aggravated his left knee injury after going back to first base on a pickoff throw — which came moments after he banged up his left arm in a collision with first baseman Tommy Joseph.

The Mets won’t know more about Cabrera until Monday, who recently returned from the DL with a left patellar tendon strain.