PORT ST. LUCIE, Fla. — Josh Edgin’s left elbow had marooned him here, far from the revival that unfolded at Citi Field, away from the drama of the pennant race and the bright lights of the World Series.

The lefthander was to be a part of it all. He was coming off a breakthrough 2014 season in which he posted a 1.32 ERA in 47 appearances. He arrived at spring training last year as the Mets’ best lefthanded weapon out of the bullpen.

Then his elbow ached and his summer was shot. He spent it in the early stages of rehab from Tommy John surgery.

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“Tough’s an understatement,” Edgin said last week. “It was a great, great summer for the Mets but a down summer for myself. Seeing the guys win, make the World Series, it was bittersweet. Bitter for me and sweet for them. I was happy and kind of upset at the same time.”

Edgin, who could be back in the Mets’ bullpen by May, said his only bond with the team came through the television. Even then, there were moments that proved too difficult.

“There were some days I didn’t even really want to turn it on,” he said. “It just felt like it was tough. But it’s good now.”

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The process has been a typical slog, its torment stemming from its tediousness. But that toil also has brought steady progress.

On Wednesday, Edgin threw from full distance, albeit not at full speed. He’ll throw again today. All of it will lead to another step, facing batters, before he makes a return.

At the time of his injury, Edgin was the Mets’ primary lefty. That job description has grown more crowded since.

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Jerry Blevins, acquired after Edgin went down, also missed the bulk of the season with arm trouble. He’s healthy now and is expected to fill the role of lefty specialist.

The Mets also signed lefty Antonio Bastardo this winter, though he’ll likely work as a setup man facing both lefthanded and righthanded hitters.

At the very least, Edgin’s return would give the Mets useful depth, though he must first prove that he’s healthy.

“I want to make sure my arm’s right so I can give the bullpen 100 percent of what I have,” he said. “I don’t want any excuses for a hit here or a hit there. I want to be ready to go.”