MIAMI — The Mets have one last player who may return from the injured list before the season concludes.

Starling Marte, who traveled with the Mets this week, may soon see action in a simulated game in Port St. Lucie, according to manager Buck Showalter, and could potentially return to the club.

The veteran outfielder has been on the IL since Aug. 6 with a right groin strain.

Last offseason, Marte underwent surgery on both groins.

“He looks really good,” Showalter said before the Mets’ 4-3 loss to the Marlins on Tuesday.

“You can tell he’s moving really well. I think it would be good for him to go home [for the offseason] knowing that some of the new approaches with the physical therapy and some of the things they have done are working. I think that would be good to see him get through and he’s far enough along. It’s not like he had a new injury. … I would like for him to get out there for however many games they think he should.”

Top Mets prospect Luisangel Acuña left a playoff game for Double-A Binghamton on Tuesday night after he was hit in the face by a pitch.

Acuña initially crumpled to the ground, according to reports, but walked off the field under his own power.

He appeared to be bloodied.

The Mets acquired the 21-year-old infielder in the July trade that sent Max Scherzer to Texas.

Showalter said that he plans to start Brett Baty at third base on Wednesday.

The rookie has missed the last week with a left groin strain, giving Ronny Mauricio an opportunity at the position.

Mauricio will move to second base, with Jeff McNeil shifting back to the outfield.

A day after it became official that Edwin Diaz won’t pitch for the Mets this season, Showalter indicated a sense of relief he won’t have to worry about the All-Star closer physically.

Diaz is rehabbing from patellar tendon surgery on his right knee, and the right-hander might have been a possibility to return if the Mets had reached the playoffs.

“I try to look at it, ‘This would be great, you get him out there, they play the song,’ all this stuff but what if it doesn’t work out well?” Showalter said. “Where are you? What if he goes to cover first and it doesn’t look good? Every moment we buy, we are getting closer to him being [100 percent].”

Diaz will continue throwing through the end of the season.