Heredia will have a second opinion on the injured right shoulder before having the procedure.

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OAKLAND, Calif. — Following the Mariners’ 6-3 win on Tuesday night, Guillermo Heredia went around the clubhouse and said his goodbyes to his teammates.

While the Mariners still have a series remaining in Anaheim, Heredia flew back to Seattle on Wednesday morning. His season was cut short by an aching right shoulder that will need a surgical procedure in the offseason per manager Scott Servais on Wednesday afternoon.

“It needs to happen,” Servais said. “It will be kind of a lengthy rehab, but we just thought that the quicker we get on this, the better for him.”

The official injury per the Mariners’ medical staff is a subluxation of the right shoulder, which is basically partial dislocation. That type of injury can lead to instability in the shoulder, which is what Heredia was dealing with for much of the season. It was made worse on a diving attempt for a fly ball a few weeks ago in Houston.

“It’s loose and it needs to be tightened up is the easiest way to say it,” Servais said.

Heredia has already received one diagnosis recommending surgery. He will head to Miami in the coming days to have a second opinion on the shoulder by the doctor that would likely do his surgery. The plan would be for Heredia to have the surgery shortly thereafter and do the rehab and recovery in Miami, where he resides in the offseason. He’s expected to be ready by spring training.

“He needs to be around the right doctors and right people to get it right,” Servais said. “He lives down there. We feel really good about that situation.”

Servais met with Heredia before Tuesday’s game as an exit interview before the offseason.

“I’m really happy with his development,” he said. “A year ago, we were really concerned about the swing. He went to the Fall League and really worked on cleaning up some things. We saw him come into spring training with the adjustments in hand. He had a really good spring. He was on the club as the platoon guy and was forced to play more.”

Heredia played in 123 games, hitting .249 with a .652 on-base plus slugging percentage, 16 doubles, six homers and 24 RBI. He had his best success in more of a platoon role, splitting time with Jarrod Dyson. But when Dyson injured his groin, Heredia was forced to play every day. Many scouts believed he became over-exposed to pitchers.

“One thing I wanted to talk to him about was that he had a really good year to me,” Servais said. “And I know we just ran him into the ground at the end. We had to play him and play him. The numbers don’t look as good as they actually were given the role he was on this team to fill. He did an excellent job in the outfield. Defensively, he was outstanding.”

On Aug. 16, he was hitting .287 with a .744 OPS. Over the next 34 games he hit .140 with a .393 OPS, three doubles, two RBI and 22 strikeouts. The shoulder was an also issue in the last few weeks.

“I think a lot more than he let on,” Servais said. “Of all the guys the team, we’ve got some tough guys here, he’s right up at the top list. He grinds it out. He keeps playing. He’s never going to complain.”